Tabs to spaces to be consistent

``` vendor/bin/indent --spaces -r framework/ vendor/bin/indent --tabs -r . --pattern=*.json vendor/bin/indent --spaces -r . --pattern=*.md vendor/bin/indent --spaces -r . --pattern=yii.*.js vendor/bin/indent --spaces -r . --pattern=*.css ```
10 years ago · b7e493fca0
31 changed files with 966 additions and 965 deletions
--- a/apps/advanced/backend/web/css/site.css
+++ b/apps/advanced/backend/web/css/site.css
@ -1,13 +1,13 @@
 html,
 body {
-	height: 100%;
+    height: 100%;
 }

 .wrap {
-	min-height: 100%;
-	height: auto;
-	margin: 0 auto -60px;
-	padding: 0 0 60px;
+    min-height: 100%;
+    height: auto;
+    margin: 0 auto -60px;
+    padding: 0 0 60px;
 }

 .wrap > .container {
@ -15,61 +15,61 @@ body {
 }

 .footer {
-	height: 60px;
-	background-color: #f5f5f5;
-	border-top: 1px solid #ddd;
-	padding-top: 20px;
+    height: 60px;
+    background-color: #f5f5f5;
+    border-top: 1px solid #ddd;
+    padding-top: 20px;
 }

 .jumbotron {
-	text-align: center;
-	background-color: transparent;
+    text-align: center;
+    background-color: transparent;
 }

 .jumbotron .btn {
-	font-size: 21px;
-	padding: 14px 24px;
+    font-size: 21px;
+    padding: 14px 24px;
 }

 .not-set {
-	color: #c55;
-	font-style: italic;
+    color: #c55;
+    font-style: italic;
 }

 /* add sorting icons to gridview sort links */
 a.asc:after, a.desc:after {
-	position: relative;
-	top: 1px;
-	display: inline-block;
-	font-family: 'Glyphicons Halflings';
-	font-style: normal;
-	font-weight: normal;
-	line-height: 1;
-	padding-left: 5px;
+    position: relative;
+    top: 1px;
+    display: inline-block;
+    font-family: 'Glyphicons Halflings';
+    font-style: normal;
+    font-weight: normal;
+    line-height: 1;
+    padding-left: 5px;
 }

 a.asc:after {
-	content: /*"\e113"*/ "\e151";
+    content: /*"\e113"*/ "\e151";
 }

 a.desc:after {
-	content: /*"\e114"*/ "\e152";
+    content: /*"\e114"*/ "\e152";
 }

 .sort-numerical a.asc:after {
-	content: "\e153";
+    content: "\e153";
 }

 .sort-numerical a.desc:after {
-	content: "\e154";
+    content: "\e154";
 }

 .sort-ordinal a.asc:after {
-	content: "\e155";
+    content: "\e155";
 }

 .sort-ordinal a.desc:after {
-	content: "\e156";
+    content: "\e156";
 }

 .grid-view th {
@ -77,15 +77,15 @@ a.desc:after {
 }

 .hint-block {
-	display: block;
-	margin-top: 5px;
-	color: #999;
+    display: block;
+    margin-top: 5px;
+    color: #999;
 }

 .error-summary {
-	color: #a94442;
-	background: #fdf7f7;
-	border-left: 3px solid #eed3d7;
-	padding: 10px 20px;
-	margin: 0 0 15px 0;
+    color: #a94442;
+    background: #fdf7f7;
+    border-left: 3px solid #eed3d7;
+    padding: 10px 20px;
+    margin: 0 0 15px 0;
 }
--- a/apps/advanced/frontend/web/css/site.css
+++ b/apps/advanced/frontend/web/css/site.css
@ -1,13 +1,13 @@
 html,
 body {
-	height: 100%;
+    height: 100%;
 }

 .wrap {
-	min-height: 100%;
-	height: auto;
-	margin: 0 auto -60px;
-	padding: 0 0 60px;
+    min-height: 100%;
+    height: auto;
+    margin: 0 auto -60px;
+    padding: 0 0 60px;
 }

 .wrap > .container {
@ -15,61 +15,61 @@ body {
 }

 .footer {
-	height: 60px;
-	background-color: #f5f5f5;
-	border-top: 1px solid #ddd;
-	padding-top: 20px;
+    height: 60px;
+    background-color: #f5f5f5;
+    border-top: 1px solid #ddd;
+    padding-top: 20px;
 }

 .jumbotron {
-	text-align: center;
-	background-color: transparent;
+    text-align: center;
+    background-color: transparent;
 }

 .jumbotron .btn {
-	font-size: 21px;
-	padding: 14px 24px;
+    font-size: 21px;
+    padding: 14px 24px;
 }

 .not-set {
-	color: #c55;
-	font-style: italic;
+    color: #c55;
+    font-style: italic;
 }

 /* add sorting icons to gridview sort links */
 a.asc:after, a.desc:after {
-	position: relative;
-	top: 1px;
-	display: inline-block;
-	font-family: 'Glyphicons Halflings';
-	font-style: normal;
-	font-weight: normal;
-	line-height: 1;
-	padding-left: 5px;
+    position: relative;
+    top: 1px;
+    display: inline-block;
+    font-family: 'Glyphicons Halflings';
+    font-style: normal;
+    font-weight: normal;
+    line-height: 1;
+    padding-left: 5px;
 }

 a.asc:after {
-	content: /*"\e113"*/ "\e151";
+    content: /*"\e113"*/ "\e151";
 }

 a.desc:after {
-	content: /*"\e114"*/ "\e152";
+    content: /*"\e114"*/ "\e152";
 }

 .sort-numerical a.asc:after {
-	content: "\e153";
+    content: "\e153";
 }

 .sort-numerical a.desc:after {
-	content: "\e154";
+    content: "\e154";
 }

 .sort-ordinal a.asc:after {
-	content: "\e155";
+    content: "\e155";
 }

 .sort-ordinal a.desc:after {
-	content: "\e156";
+    content: "\e156";
 }

 .grid-view th {
@ -77,15 +77,15 @@ a.desc:after {
 }

 .hint-block {
-	display: block;
-	margin-top: 5px;
-	color: #999;
+    display: block;
+    margin-top: 5px;
+    color: #999;
 }

 .error-summary {
-	color: #a94442;
-	background: #fdf7f7;
-	border-left: 3px solid #eed3d7;
-	padding: 10px 20px;
-	margin: 0 0 15px 0;
+    color: #a94442;
+    background: #fdf7f7;
+    border-left: 3px solid #eed3d7;
+    padding: 10px 20px;
+    margin: 0 0 15px 0;
 }
--- a/apps/basic/README.md
+++ b/apps/basic/README.md
@ -75,11 +75,11 @@ Edit the file `config/db.php` with real data, for example:

 ```php
 return [
-	'class' => 'yii\db\Connection',
-	'dsn' => 'mysql:host=localhost;dbname=yii2basic',
-	'username' => 'root',
-	'password' => '1234',
-	'charset' => 'utf8',
+    'class' => 'yii\db\Connection',
+    'dsn' => 'mysql:host=localhost;dbname=yii2basic',
+    'username' => 'root',
+    'password' => '1234',
+    'charset' => 'utf8',
 ];
 ```

--- a/apps/basic/web/css/site.css
+++ b/apps/basic/web/css/site.css
@ -1,13 +1,13 @@
 html,
 body {
-	height: 100%;
+    height: 100%;
 }

 .wrap {
-	min-height: 100%;
-	height: auto;
-	margin: 0 auto -60px;
-	padding: 0 0 60px;
+    min-height: 100%;
+    height: auto;
+    margin: 0 auto -60px;
+    padding: 0 0 60px;
 }

 .wrap > .container {
@ -15,61 +15,61 @@ body {
 }

 .footer {
-	height: 60px;
-	background-color: #f5f5f5;
-	border-top: 1px solid #ddd;
-	padding-top: 20px;
+    height: 60px;
+    background-color: #f5f5f5;
+    border-top: 1px solid #ddd;
+    padding-top: 20px;
 }

 .jumbotron {
-	text-align: center;
-	background-color: transparent;
+    text-align: center;
+    background-color: transparent;
 }

 .jumbotron .btn {
-	font-size: 21px;
-	padding: 14px 24px;
+    font-size: 21px;
+    padding: 14px 24px;
 }

 .not-set {
-	color: #c55;
-	font-style: italic;
+    color: #c55;
+    font-style: italic;
 }

 /* add sorting icons to gridview sort links */
 a.asc:after, a.desc:after {
-	position: relative;
-	top: 1px;
-	display: inline-block;
-	font-family: 'Glyphicons Halflings';
-	font-style: normal;
-	font-weight: normal;
-	line-height: 1;
-	padding-left: 5px;
+    position: relative;
+    top: 1px;
+    display: inline-block;
+    font-family: 'Glyphicons Halflings';
+    font-style: normal;
+    font-weight: normal;
+    line-height: 1;
+    padding-left: 5px;
 }

 a.asc:after {
-	content: /*"\e113"*/ "\e151";
+    content: /*"\e113"*/ "\e151";
 }

 a.desc:after {
-	content: /*"\e114"*/ "\e152";
+    content: /*"\e114"*/ "\e152";
 }

 .sort-numerical a.asc:after {
-	content: "\e153";
+    content: "\e153";
 }

 .sort-numerical a.desc:after {
-	content: "\e154";
+    content: "\e154";
 }

 .sort-ordinal a.asc:after {
-	content: "\e155";
+    content: "\e155";
 }

 .sort-ordinal a.desc:after {
-	content: "\e156";
+    content: "\e156";
 }

 .grid-view th {
@ -77,15 +77,15 @@ a.desc:after {
 }

 .hint-block {
-	display: block;
-	margin-top: 5px;
-	color: #999;
+    display: block;
+    margin-top: 5px;
+    color: #999;
 }

 .error-summary {
-	color: #a94442;
-	background: #fdf7f7;
-	border-left: 3px solid #eed3d7;
-	padding: 10px 20px;
-	margin: 0 0 15px 0;
+    color: #a94442;
+    background: #fdf7f7;
+    border-left: 3px solid #eed3d7;
+    padding: 10px 20px;
+    margin: 0 0 15px 0;
 }
--- a/composer.json
+++ b/composer.json
@ -83,7 +83,8 @@
 		"twig/twig": "*",
 		"smarty/smarty": "*",
 		"imagine/imagine": "v0.5.0",
-		"swiftmailer/swiftmailer": "*"
+		"swiftmailer/swiftmailer": "*",
+		"cebe/indent": "*"
 	},
 	"suggest": {
 		"phpdocumentor/reflection": "required by yii2-apidoc extension",
--- a/docs/guide/db-dao.md
+++ b/docs/guide/db-dao.md
@ -52,11 +52,11 @@ connection `DSN` doesn't indicate uniquely what database type is being used. Tha

 ```php
 'db' => [
-	'class' => 'yii\db\Connection',
-	'driverName' => 'mysql',
-	'dsn' => 'odbc:Driver={MySQL};Server=localhost;Database=test',
-	'username' => 'root',
-	'password' => '',
+    'class' => 'yii\db\Connection',
+    'driverName' => 'mysql',
+    'dsn' => 'odbc:Driver={MySQL};Server=localhost;Database=test',
+    'username' => 'root',
+    'password' => '',
 ],
 ```

--- a/docs/guide/output-data-widgets.md
+++ b/docs/guide/output-data-widgets.md
@ -293,8 +293,8 @@ $searchModel = new PostSearch();
 $dataProvider = $searchModel->search($_GET);

 return $this->render('myview', [
-	'dataProvider' => $dataProvider,
-	'searchModel' => $searchModel,
+    'dataProvider' => $dataProvider,
+    'searchModel' => $searchModel,
 ]);
 ```

@ -303,7 +303,7 @@ And in the view you then assign the `$dataProvider` and `$searchModel` to the Gr
 ```php
 echo GridView::widget([
    'dataProvider' => $dataProvider,
-	'filterModel' => $searchModel,
+    'filterModel' => $searchModel,
 ]);
 ```

--- a/docs/guide/structure-applications.md
+++ b/docs/guide/structure-applications.md
@ -149,14 +149,14 @@ life cycle:

   4. Initialize the application with [CApplication::init()]
       - Register application behaviors;
-	   - Load static application components;
+       - Load static application components;

   5. Raise an [onBeginRequest|CApplication::onBeginRequest] event;

   6. Process the user request:
-	   - Collect information about the request;
-	   - Create a controller;
-	   - Run the controller;
+       - Collect information about the request;
+       - Create a controller;
+       - Run the controller;

   7. Raise an [onEndRequest|CApplication::onEndRequest] event;

--- a/docs/internals/core-code-style.md
+++ b/docs/internals/core-code-style.md
@ -64,7 +64,7 @@ The term "class" refers to all classes and interfaces here.
 */
 class MyClass extends \yii\Object implements MyInterface
 {
-	// code
+    // code
 }
 ```

@ -77,8 +77,8 @@ For example:
 <?php
 class Foo
 {
-	const VERSION = '1.0';
-	const DATE_APPROVED = '2012-06-01';
+    const VERSION = '1.0';
+    const DATE_APPROVED = '2012-06-01';
 }
 ```
 ### 4.2. Properties
@ -101,9 +101,9 @@ For example:
 <?php
 class Foo
 {
-	public $publicProp;
-	protected $protectedProp;
-	private $_privateProp;
+    public $publicProp;
+    protected $protectedProp;
+    private $_privateProp;
 }
 ```

@ -121,14 +121,14 @@ class Foo
 */
 class Foo
 {
-	/**
-	 * Documentation
-	 */
-	public function bar()
-	{
-		// code
-		return $value;
-	}
+    /**
+     * Documentation
+     */
+    public function bar()
+    {
+        // code
+        return $value;
+    }
 }
 ~~~

@ -150,8 +150,8 @@ Use the following format for associative arrays:

 ```php
 $config = [
-	'name'  => 'Yii',
-	'options' => ['usePHP' => true],
+    'name'  => 'Yii',
+    'options' => ['usePHP' => true],
 ];
 ```

@ -161,8 +161,8 @@ Changing type of an existing variable is considered as a bad practice. Try not t
 ```php
 public function save(Transaction $transaction, $argument2 = 100)
 {
-	$transaction = new Connection; // bad
-	$argument2 = 200; // good
+    $transaction = new Connection; // bad
+    $argument2 = 200; // good
 }
 ```

@ -201,8 +201,8 @@ When string is long format is the following:

 ```php
 $sql = "SELECT *"
-	. "FROM `post` "
-	. "WHERE `id` = 121 ";
+    . "FROM `post` "
+    . "WHERE `id` = 121 ";
 ```

 ### 5.3 arrays
@ -223,9 +223,9 @@ If there are too many elements for a single line:

 ```php
 $arr = [
-	3, 14, 15,
-	92, 6, $test,
-	'Yii', 'Framework',
+    3, 14, 15,
+    92, 6, $test,
+    'Yii', 'Framework',
 ];
 ```

@ -235,8 +235,8 @@ Use the following format for associative arrays:

 ```php
 $config = [
-	'name'  => 'Yii',
-	'options' => ['usePHP' => true],
+    'name'  => 'Yii',
+    'options' => ['usePHP' => true],
 ];
 ```

@ -250,16 +250,16 @@ $config = [

 ```php
 if ($event === null) {
-	return new Event();
+    return new Event();
 } elseif ($event instanceof CoolEvent) {
-	return $event->instance();
+    return $event->instance();
 } else {
-	return null;
+    return null;
 }

 // the following is NOT allowed:
 if (!$model && null === $event)
-	throw new Exception('test');
+    throw new Exception('test');
 ```

 #### switch
@ -268,18 +268,18 @@ Use the following formatting for switch:

 ```php
 switch ($this->phpType) {
-	case 'string':
-		$a = (string)$value;
-		break;
-	case 'integer':
-	case 'int':
-		$a = (integer)$value;
-		break;
-	case 'boolean':
-		$a = (boolean)$value;
-		break;
-	default:
-		$a = null;
+    case 'string':
+        $a = (string)$value;
+        break;
+    case 'integer':
+    case 'int':
+        $a = (integer)$value;
+        break;
+    case 'boolean':
+        $a = (boolean)$value;
+        break;
+    default:
+        $a = null;
 }
 ```

@ -291,8 +291,8 @@ doIt(2, 3);
 doIt(['a' => 'b']);

 doIt('a', [
-	'a' => 'b',
-	'c' => 'd',
+    'a' => 'b',
+    'c' => 'd',
 ]);
 ```

@ -304,17 +304,17 @@ Note space between `function`/`use` tokens and open parenthesis:
 // good
 $n = 100;
 $sum = array_reduce($numbers, function ($r, $x) use ($n) {
-	$this->doMagic();
-	$r += $x * $n;
-	return $r;
+    $this->doMagic();
+    $r += $x * $n;
+    return $r;
 });

 // bad
 $n = 100;
 $mul = array_reduce($numbers, function($r, $x) use($n) {
-	$this->doMagic();
-	$r *= $x * $n;
-	return $r;
+    $this->doMagic();
+    $r *= $x * $n;
+    return $r;
 });
 ```

@ -336,17 +336,17 @@ Documentation
  in `@return`. Here is an example:

  ```php
-	<?php
-	/**
-	 * Returns the errors for all attribute or a single attribute.
-	 * @param string $attribute attribute name. Use null to retrieve errors for all attributes.
-	 * @property array An array of errors for all attributes. Empty array is returned if no error.
-	 * The result is a two-dimensional array. See [[getErrors()]] for detailed description.
-	 * @return array errors for all attributes or the specified attribute. Empty array is returned if no error.
-	 * Note that when returning errors for all attributes, the result is a two-dimensional array, like the following:
-	 * ...
-	 */
-	public function getErrors($attribute = null)
+    <?php
+    /**
+     * Returns the errors for all attribute or a single attribute.
+     * @param string $attribute attribute name. Use null to retrieve errors for all attributes.
+     * @property array An array of errors for all attributes. Empty array is returned if no error.
+     * The result is a two-dimensional array. See [[getErrors()]] for detailed description.
+     * @return array errors for all attributes or the specified attribute. Empty array is returned if no error.
+     * Note that when returning errors for all attributes, the result is a two-dimensional array, like the following:
+     * ...
+     */
+    public function getErrors($attribute = null)
  ```

 #### File
@ -393,11 +393,11 @@ class Component extends \yii\base\Object
 */
 public function getEventHandlers($name)
 {
-	if (!isset($this->_e[$name])) {
-		$this->_e[$name] = new Vector;
-	}
-	$this->ensureBehaviors();
-	return $this->_e[$name];
+    if (!isset($this->_e[$name])) {
+        $this->_e[$name] = new Vector;
+    }
+    $this->ensureBehaviors();
+    return $this->_e[$name];
 }
 ```

--- a/docs/internals/view-code-style.md
+++ b/docs/internals/view-code-style.md
@ -26,26 +26,26 @@ $this->title = 'Posts';
 ?>
 <!-- Separate PHP blocks are preferred for foreach, for, if etc. -->
 <?php foreach ($posts as $post): ?>
-	<!-- Note indentation level here. -->
-	<h2><?= Html::encode($post['title']) ?></h2>
-	<p><?= Html::encode($post['shortDescription']) ?></p>
+    <!-- Note indentation level here. -->
+    <h2><?= Html::encode($post['title']) ?></h2>
+    <p><?= Html::encode($post['shortDescription']) ?></p>
 <!-- `endforeach;`, `endfor;`, `endif;`, etc. should be used instead of `}` in case multiple PHP blocks are used -->
 <?php endforeach; ?>

 <!-- Widget declaration may or may not be exploded into multiple LOCs. -->
 <?php $form = ActiveForm::begin([
-	'options' => ['id' => 'contact-message-form'],
-	'fieldConfig' => ['inputOptions' => ['class' => 'common-input']],
+    'options' => ['id' => 'contact-message-form'],
+    'fieldConfig' => ['inputOptions' => ['class' => 'common-input']],
 ]); ?>
-	<!-- Note indentation level here. -->
-	<?= $form->field($contactMessage, 'name')->textInput() ?>
-	<?= $form->field($contactMessage, 'email')->textInput() ?>
-	<?= $form->field($contactMessage, 'subject')->textInput() ?>
-	<?= $form->field($contactMessage, 'body')->textArea(['rows' => 6]) ?>
-
-	<div class="form-actions">
-		<?= Html::submitButton('Submit', ['class' => 'common-button']) ?>
-	</div>
+    <!-- Note indentation level here. -->
+    <?= $form->field($contactMessage, 'name')->textInput() ?>
+    <?= $form->field($contactMessage, 'email')->textInput() ?>
+    <?= $form->field($contactMessage, 'subject')->textInput() ?>
+    <?= $form->field($contactMessage, 'body')->textArea(['rows' => 6]) ?>
+
+    <div class="form-actions">
+        <?= Html::submitButton('Submit', ['class' => 'common-button']) ?>
+    </div>
 <!-- Ending widget call should have individual PHP tag. -->
 <?php ActiveForm::end(); ?>
 <!-- Trailing newline character is mandatory. -->
--- a/extensions/apidoc/composer.json
+++ b/extensions/apidoc/composer.json
@ -17,7 +17,7 @@
 			"email": "mail@cebe.cc"
 		}
 	],
-    "minimum-stability": "dev",
+	"minimum-stability": "dev",
 	"require": {
 		"yiisoft/yii2": "*",
 		"yiisoft/yii2-bootstrap": "*",
--- a/extensions/apidoc/helpers/ApiIndexer.php
+++ b/extensions/apidoc/helpers/ApiIndexer.php
@ -16,15 +16,15 @@ use yii\helpers\StringHelper;
 class ApiIndexer extends Indexer
 {
    protected function generateFileInfo($file, $contents, $basePath, $baseUrl)
-   	{
-   		// create file entry
-   		if (preg_match('~<h1>(.*?)</h1>~s', $contents, $matches)) {
-   			$title = str_replace('&para;', '', strip_tags($matches[1]));
-   		} elseif (preg_match('~<title>(.*?)</title>~s', $contents, $matches)) {
-   			$title = strip_tags($matches[1]);
-   		} else {
-   			$title = '<i>No title</i>';
-   		}
+    {
+        // create file entry
+        if (preg_match('~<h1>(.*?)</h1>~s', $contents, $matches)) {
+            $title = str_replace('&para;', '', strip_tags($matches[1]));
+        } elseif (preg_match('~<title>(.*?)</title>~s', $contents, $matches)) {
+            $title = strip_tags($matches[1]);
+        } else {
+            $title = '<i>No title</i>';
+        }

        if (preg_match('~<div id="classDescription">\s*<strong>(.*?)</strong>~s', $contents, $matches)) {
            $description = strip_tags($matches[1]);
@ -37,24 +37,24 @@ class ApiIndexer extends Indexer
            $description = '';
        }

-   		return [
-   			'u' => $baseUrl . str_replace('\\', '/', substr($file, strlen(rtrim($basePath, '\\/')))),
-   			't' => $title,
-   			'd' => $description,
-   		];
-   	}
+        return [
+            'u' => $baseUrl . str_replace('\\', '/', substr($file, strlen(rtrim($basePath, '\\/')))),
+            't' => $title,
+            'd' => $description,
+        ];
+    }

    /**
-   	 * @return TokenizerInterface
-   	 */
-   	public function getTokenizer()
-   	{
+     * @return TokenizerInterface
+     */
+    public function getTokenizer()
+    {
        $tokenizer = parent::getTokenizer();
        if ($tokenizer instanceof StandardTokenizer) {
            // yii is part of every doc and makes weird search results
            $tokenizer->stopWords[] = 'yii';
            $tokenizer->stopWords = array_unique($tokenizer->stopWords);
        }
-   		return $tokenizer;
-   	}
+        return $tokenizer;
+    }
 }
--- a/extensions/apidoc/templates/bootstrap/assets/css/api.css
+++ b/extensions/apidoc/templates/bootstrap/assets/css/api.css
@ -24,7 +24,7 @@ code {
 }

 div.code {
-	display: none;
+    display: none;
    color: #000000;
    background-color: #FFF5E6;
    font-family: "courier new", "times new roman", monospace;
@ -43,57 +43,57 @@ div.code {
 }

 table.summaryTable {
-	background: #E6ECFF;
-	border-collapse: collapse;
-	width: 100%;
+    background: #E6ECFF;
+    border-collapse: collapse;
+    width: 100%;
 }

 table.summaryTable th, table.summaryTable td {
-	border: 1px #BFCFFF solid;
-	padding: 0.2em;
+    border: 1px #BFCFFF solid;
+    padding: 0.2em;
 }

 table.summaryTable th {
-	background: #CCD9FF;
-	text-align: left;
+    background: #CCD9FF;
+    text-align: left;
 }

 #nav {
-	padding: 3px;
-	margin: 0 0 10px 0;
-	border-top: 1px #BFCFFF solid;
+    padding: 3px;
+    margin: 0 0 10px 0;
+    border-top: 1px #BFCFFF solid;
 }

 #classDescription {
-	padding: 5px;
-	margin: 10px 0 20px 0;
-	border-bottom: 1px solid #BFCFFF;
+    padding: 5px;
+    margin: 10px 0 20px 0;
+    border-bottom: 1px solid #BFCFFF;
 }

 .detailHeader {
-	font-weight: bold;
-	font-size: 12pt;
-	margin: 30px 0 5px 0;
-	border-bottom: 1px solid #BFCFFF;
+    font-weight: bold;
+    font-size: 12pt;
+    margin: 30px 0 5px 0;
+    border-bottom: 1px solid #BFCFFF;
 }

 .detailHeaderTag {
-	font-weight: normal;
-	font-size: 10pt;
+    font-weight: normal;
+    font-size: 10pt;
 }


 .paramNameCol {
-	width: 12%;
-	font-weight: bold;
+    width: 12%;
+    font-weight: bold;
 }

 .paramTypeCol {
-	width: 12%;
+    width: 12%;
 }

 .sourceCode {
-	margin: 5px 0;
-	padding:5px;
-	background:#FFF5E6;
+    margin: 5px 0;
+    padding:5px;
+    background:#FFF5E6;
 }
--- a/extensions/apidoc/templates/bootstrap/assets/css/style.css
+++ b/extensions/apidoc/templates/bootstrap/assets/css/style.css
@ -1,65 +1,65 @@
 html,
 body {
-	height: 100%;
+    height: 100%;
 }

 .guide-content, .api-content {
-	max-width: 1250px;
+    max-width: 1250px;
 }

 .wrap {
-	min-height: 100%;
-	height: auto;
-	width: auto;
-	margin: 60px 30px 0 30px;
-	padding: 0;
+    min-height: 100%;
+    height: auto;
+    width: auto;
+    margin: 60px 30px 0 30px;
+    padding: 0;
 }

 .footer {
-	height: 60px;
-	background-color: #f5f5f5;
-	border-top: 1px solid #ddd;
-	padding: 20px 30px;
+    height: 60px;
+    background-color: #f5f5f5;
+    border-top: 1px solid #ddd;
+    padding: 20px 30px;
 }

 #navigation {
-	margin-top: 20px;
+    margin-top: 20px;
 }

 .submenu a {
-	background: #f5f5f5;
-	border-radius: 0;
+    background: #f5f5f5;
+    border-radius: 0;
 }

 .submenu a:hover, .submenu a:active,
 .submenu a.active, .submenu a.active:hover, .submenu a.active:active {
-	background: #44b5f6;
-	border-color: #44b5f6;
-	border-radius: 0;
-	color: #fff;
+    background: #44b5f6;
+    border-color: #44b5f6;
+    border-radius: 0;
+    color: #fff;
 }

 .signature, .table-striped > tbody > tr > td.signature {
-	margin: 10px 0 10px 0;
-	padding: 8px;
+    margin: 10px 0 10px 0;
+    padding: 8px;

-	color: #000000;
-	background: rgba(230, 236, 255, 0.81);
-	border: 1px rgba(191, 207, 255, 0.81) solid;
+    color: #000000;
+    background: rgba(230, 236, 255, 0.81);
+    border: 1px rgba(191, 207, 255, 0.81) solid;

-	font-family: "courier new", "times new roman", monospace;
-	line-height: 1.3em;
-	white-space: pre-line;
-	word-wrap: break-word;
-	word-break: break-all;
+    font-family: "courier new", "times new roman", monospace;
+    line-height: 1.3em;
+    white-space: pre-line;
+    word-wrap: break-word;
+    word-break: break-all;
 }

 blockquote {
-	font-size: 14px;
+    font-size: 14px;
 }

 td p {
-	margin: 0;
+    margin: 0;
 }

 table.detail-table .param-name-col { width: 15%; min-width: 100px; }
@ -73,41 +73,41 @@ table.summary-table .col-event    { width: 20%; }
 table.summary-table .col-defined  { width: 15%; }

 .detail-header {
-	margin-top: 30px;
+    margin-top: 30px;
 }

 .doc-description {
-	border-left: solid 1px #ddd;
-	border-right: solid 1px #ddd;
-	padding: 10px 8px;
-	margin: 0;
+    border-left: solid 1px #ddd;
+    border-right: solid 1px #ddd;
+    padding: 10px 8px;
+    margin: 0;
 }

 .event-doc .doc-description {
-	border-bottom: solid 1px #ddd;
+    border-bottom: solid 1px #ddd;
 }

 .doc-description p:last-child {
-	margin-bottom: 0;
+    margin-bottom: 0;
 }

 .tool-link {
-	float: right;
-	color: #ddd;
-	margin: 0 8px;
+    float: right;
+    color: #ddd;
+    margin: 0 8px;
 }

 .icon-hash:before {
-	content: '#';
-	font-size: 32px;
-	font-weight: bold;
-	/*top: -10px;*/
-	line-height: 0.5;
+    content: '#';
+    font-size: 32px;
+    font-weight: bold;
+    /*top: -10px;*/
+    line-height: 0.5;
 }

 .tool-link:hover {
-	color: #bbb;
-	text-decoration: none;
+    color: #bbb;
+    text-decoration: none;
 }


--- a/extensions/authclient/README.md
+++ b/extensions/authclient/README.md
@ -182,23 +182,23 @@ use yii\authclient\OAuth2;

 class MyAuthClient extends OAuth2
 {
-	protected function defaultName()
-	{
-		return 'my_auth_client';
-	}
-
-	protected function defaultTitle()
-	{
-		return 'My Auth Client';
-	}
-
-	protected function defaultViewOptions()
-	{
-		return [
-			'popupWidth' => 800,
-			'popupHeight' => 500,
-		];
-	}
+    protected function defaultName()
+    {
+        return 'my_auth_client';
+    }
+
+    protected function defaultTitle()
+    {
+        return 'My Auth Client';
+    }
+
+    protected function defaultViewOptions()
+    {
+        return [
+            'popupWidth' => 800,
+            'popupHeight' => 500,
+        ];
+    }
 }
 ```

@ -215,16 +215,16 @@ use yii\authclient\OpenId;

 class MyAuthClient extends OpenId
 {
-	public $authUrl = 'https://www.my.com/openid/';
+    public $authUrl = 'https://www.my.com/openid/';

-	public $requiredAttributes = [
-		'contact/email',
-	];
+    public $requiredAttributes = [
+        'contact/email',
+    ];

-	public $optionalAttributes = [
-		'namePerson/first',
-		'namePerson/last',
-	];
+    public $optionalAttributes = [
+        'namePerson/first',
+        'namePerson/last',
+    ];
 }
 ```

@ -243,16 +243,16 @@ use yii\authclient\OAuth2;

 class MyAuthClient extends OAuth2
 {
-	public $authUrl = 'https://www.my.com/oauth2/auth';
+    public $authUrl = 'https://www.my.com/oauth2/auth';

-	public $tokenUrl = 'https://www.my.com/oauth2/token';
+    public $tokenUrl = 'https://www.my.com/oauth2/token';

-	public $apiBaseUrl = 'https://www.my.com/apis/oauth2/v1';
+    public $apiBaseUrl = 'https://www.my.com/apis/oauth2/v1';

-	protected function initUserAttributes()
-	{
-		return $this->api('userinfo', 'GET');
-	}
+    protected function initUserAttributes()
+    {
+        return $this->api('userinfo', 'GET');
+    }
 }
 ```

@ -277,18 +277,18 @@ use yii\authclient\OAuth1;

 class MyAuthClient extends OAuth1
 {
-	public $authUrl = 'https://www.my.com/oauth/auth';
+    public $authUrl = 'https://www.my.com/oauth/auth';

-	public $requestTokenUrl = 'https://www.my.com/oauth/request_token';
+    public $requestTokenUrl = 'https://www.my.com/oauth/request_token';

-	public $accessTokenUrl = 'https://www.my.com/oauth/access_token';
+    public $accessTokenUrl = 'https://www.my.com/oauth/access_token';

-	public $apiBaseUrl = 'https://www.my.com/apis/oauth/v1';
+    public $apiBaseUrl = 'https://www.my.com/apis/oauth/v1';

-	protected function initUserAttributes()
-	{
-		return $this->api('userinfo', 'GET');
-	}
+    protected function initUserAttributes()
+    {
+        return $this->api('userinfo', 'GET');
+    }
 }
 ```

--- a/extensions/bootstrap/composer.json
+++ b/extensions/bootstrap/composer.json
@ -1,29 +1,29 @@
 {
-    "name": "yiisoft/yii2-bootstrap",
-    "description": "The Twitter Bootstrap extension for the Yii framework",
-    "keywords": ["yii2", "bootstrap"],
-    "type": "yii2-extension",
-    "license": "BSD-3-Clause",
-    "support": {
-        "issues": "https://github.com/yiisoft/yii2/issues?labels=ext%3Abootstrap",
-        "forum": "http://www.yiiframework.com/forum/",
-        "wiki": "http://www.yiiframework.com/wiki/",
-        "irc": "irc://irc.freenode.net/yii",
-        "source": "https://github.com/yiisoft/yii2"
-    },
-    "authors": [
-        {
-            "name": "Qiang Xue",
-            "email": "qiang.xue@gmail.com"
-        }
-    ],
-    "require": {
-        "yiisoft/yii2": "*",
-        "twbs/bootstrap": "3.1.* | 3.0.*"
-    },
-    "autoload": {
-        "psr-4": {
-            "yii\\bootstrap\\": ""
-        }
-    }
+	"name": "yiisoft/yii2-bootstrap",
+	"description": "The Twitter Bootstrap extension for the Yii framework",
+	"keywords": ["yii2", "bootstrap"],
+	"type": "yii2-extension",
+	"license": "BSD-3-Clause",
+	"support": {
+		"issues": "https://github.com/yiisoft/yii2/issues?labels=ext%3Abootstrap",
+		"forum": "http://www.yiiframework.com/forum/",
+		"wiki": "http://www.yiiframework.com/wiki/",
+		"irc": "irc://irc.freenode.net/yii",
+		"source": "https://github.com/yiisoft/yii2"
+	},
+	"authors": [
+		{
+			"name": "Qiang Xue",
+			"email": "qiang.xue@gmail.com"
+		}
+	],
+	"require": {
+		"yiisoft/yii2": "*",
+		"twbs/bootstrap": "3.1.* | 3.0.*"
+	},
+	"autoload": {
+		"psr-4": {
+			"yii\\bootstrap\\": ""
+		}
+	}
 }
--- a/extensions/codeception/README.md
+++ b/extensions/codeception/README.md
@ -69,7 +69,7 @@ use Codeception\Event\TestEvent;

 public function testSomething()
 {
-	$this->fire('myevent', new TestEvent($this));
+    $this->fire('myevent', new TestEvent($this));
 }
 ```
 this event can be catched in modules and helpers. If your test is in the group, then event name will be followed by the groupname, 
@ -84,15 +84,15 @@ Execution of special tests methods is (for example on ```UserTest``` class):
 ```
 tests\unit\models\UserTest::setUpBeforeClass();

-	tests\unit\models\UserTest::_before();
+    tests\unit\models\UserTest::_before();

-		tests\unit\models\UserTest::setUp();
+        tests\unit\models\UserTest::setUp();

-			tests\unit\models\UserTest::testSomething();
+            tests\unit\models\UserTest::testSomething();

-		tests\unit\models\UserTest::tearDown();
+        tests\unit\models\UserTest::tearDown();

-	tests\unit\models\UserTest::_after();
+    tests\unit\models\UserTest::_after();

 tests\unit\models\UserTest::tearDownAfterClass();
 ```
@ -109,8 +109,8 @@ You may need to specify different configuration files per test cases, to do this

 SomeConsoleTest extends \yii\codeception\TestCase
 {
-	// this is the config file to load as application config
-	public $appConfig = '@app/path/to/my/custom/config/for/test.php';
+    // this is the config file to load as application config
+    public $appConfig = '@app/path/to/my/custom/config/for/test.php';
 }
 ```

@ -120,14 +120,14 @@ application class in the config, for example for testing console commands or fea

 ```php
 return yii\helpers\ArrayHelper::merge(
-	require(__DIR__ . '/../../config/console.php'),
-	require(__DIR__ . '/../_config.php'),
-	[
-		'class' => 'yii\console\Application',
-		'components' => [
-			//override console components if needed
-		],
-	]
+    require(__DIR__ . '/../../config/console.php'),
+    require(__DIR__ . '/../_config.php'),
+    [
+        'class' => 'yii\console\Application',
+        'components' => [
+            //override console components if needed
+        ],
+    ]
 );
 ```

@ -139,7 +139,7 @@ use \yii\codeception\TestCase;

 class ConsoleTestCase extends TestCase
 {
-	public $appConfig = '@tests/unit/_console.php';
+    public $appConfig = '@tests/unit/_console.php';
 }
 ```

@ -160,15 +160,15 @@ use Yii;
 class MailTest extends TestCase
 {

-	protected function setUp()
-	{
-		// don't forget to call parent method that will setup Yii application
-		parent::setUp();
+    protected function setUp()
+    {
+        // don't forget to call parent method that will setup Yii application
+        parent::setUp();

-		Yii::$app->mail->fileTransportCallback = function ($mailer, $message) {
-			return 'testing_message.eml';
-		};
-	}
+        Yii::$app->mail->fileTransportCallback = function ($mailer, $message) {
+            return 'testing_message.eml';
+        };
+    }

 }
 ```
@ -186,29 +186,29 @@ use \yii\codeception\TestCase;
 class SomeMyTest extends TestCase
 {

-	public function testOne()
-	{
-		...
-	}
-
-	public function testTwo()
-	{
-		$this->mockApplication([
-			'language' => 'ru-RU',
-			'components' => [
-				'db' => [
-					//your custom configuration here
-				],
-			],
-		]);
-
-		//your expectations and assertions goes here
-	}
-
-	public function testThree()
-	{
-		...
-	}
+    public function testOne()
+    {
+        ...
+    }
+
+    public function testTwo()
+    {
+        $this->mockApplication([
+            'language' => 'ru-RU',
+            'components' => [
+                'db' => [
+                    //your custom configuration here
+                ],
+            ],
+        ]);
+
+        //your expectations and assertions goes here
+    }
+
+    public function testThree()
+    {
+        ...
+    }

 }
 ```
@ -226,12 +226,12 @@ use Codeception\Util\Debug;

 SomeDebugTest extends \yii\codeception\TestCase
 {
-	public function testSmth()
-	{
-		Debug::debug('some string');
-		Debug::debug($someArray);
-		Debug::debug($someObject);
-	}
+    public function testSmth()
+    {
+        Debug::debug('some string');
+        Debug::debug($someArray);
+        Debug::debug($someObject);
+    }

 }
 ```
--- a/extensions/composer/README.md
+++ b/extensions/composer/README.md
@ -13,11 +13,11 @@ like the following:

 ```json
 {
-	"type": "yii2-extension",
-	"require": {
-		"yiisoft/yii2": "*"
-	},
-	...
+    "type": "yii2-extension",
+    "require": {
+        "yiisoft/yii2": "*"
+    },
+    ...
 }
 ```

@ -26,11 +26,11 @@ the Yii 2 application is responding to a request. For example,

 ```json
 {
-	"type": "yii2-extension",
-	...,
-	"extra": {
-		"bootstrap": "yii\\jui\\Extension"
-	}
+    "type": "yii2-extension",
+    ...,
+    "extra": {
+        "bootstrap": "yii\\jui\\Extension"
+    }
 }
 ```

@ -42,22 +42,22 @@ For example,

 ```json
 {
-	"name": "yiisoft/yii2-app-basic",
-	"type": "project",
-	...
-	"scripts": {
-		"post-create-project-cmd": [
-			"yii\\composer\\Installer::setPermission"
-		]
-	},
-	"extra": {
-		"writable": [
-			"runtime",
-			"web/assets"
-		],
-		"executable": [
-			"yii"
-		]
-	}
+    "name": "yiisoft/yii2-app-basic",
+    "type": "project",
+    ...
+    "scripts": {
+        "post-create-project-cmd": [
+            "yii\\composer\\Installer::setPermission"
+        ]
+    },
+    "extra": {
+        "writable": [
+            "runtime",
+            "web/assets"
+        ],
+        "executable": [
+            "yii"
+        ]
+    }
 }
 ```
--- a/extensions/debug/assets/main.css
+++ b/extensions/debug/assets/main.css
@ -1,46 +1,46 @@
 span.indent {
-	color: #ccc;
+    color: #ccc;
 }

 ul.trace {
-	font-size: 12px;
-	color: #999;
-	margin: 2px 0 0 0;
-	padding: 0;
-	list-style: none;
-	white-space: normal;
+    font-size: 12px;
+    color: #999;
+    margin: 2px 0 0 0;
+    padding: 0;
+    list-style: none;
+    white-space: normal;
 }

 .callout-danger {
-	background-color: #fcf2f2;
-	border-color: #dFb5b4;
+    background-color: #fcf2f2;
+    border-color: #dFb5b4;
 }
 .callout {
-	margin: 0 0 10px 0;
-	padding: 5px;
+    margin: 0 0 10px 0;
+    padding: 5px;
 }

 .list-group .glyphicon {
-	float: right;
+    float: right;
 }

 td, th {
-	white-space: pre-wrap;
-	word-wrap: break-word;
+    white-space: pre-wrap;
+    word-wrap: break-word;
 }

 .request-table td {
-	font-family: Menlo, Monaco, Consolas, "Courier New", monospace;
-	word-break: break-all;
+    font-family: Menlo, Monaco, Consolas, "Courier New", monospace;
+    word-break: break-all;
 }

 .config-php-info-table td.v {
-	word-break: break-all;
+    word-break: break-all;
 }

 .not-set {
-	color: #c55;
-	font-style: italic;
+    color: #c55;
+    font-style: italic;
 }

 .detail-grid-view th {
@ -49,47 +49,47 @@ td, th {

 /* add sorting icons to gridview sort links */
 a.asc:after, a.desc:after {
-	position: relative;
-	top: 1px;
-	display: inline-block;
-	font-family: 'Glyphicons Halflings';
-	font-style: normal;
-	font-weight: normal;
-	line-height: 1;
-	padding-left: 5px;
+    position: relative;
+    top: 1px;
+    display: inline-block;
+    font-family: 'Glyphicons Halflings';
+    font-style: normal;
+    font-weight: normal;
+    line-height: 1;
+    padding-left: 5px;
 }

 a.asc:after {
-	content: /*"\e113"*/ "\e151";
+    content: /*"\e113"*/ "\e151";
 }

 a.desc:after {
-	content: /*"\e114"*/ "\e152";
+    content: /*"\e114"*/ "\e152";
 }

 .sort-numerical a.asc:after {
-	content: "\e153";
+    content: "\e153";
 }

 .sort-numerical a.desc:after {
-	content: "\e154";
+    content: "\e154";
 }

 .sort-ordinal a.asc:after {
-	content: "\e155";
+    content: "\e155";
 }

 .sort-ordinal a.desc:after {
-	content: "\e156";
+    content: "\e156";
 }

 .mail-sorter {
-	margin-top: 7px;
+    margin-top: 7px;
 }

 .mail-sorter li {
-	list-style: none;
-	float: left;
-	width: 12%;
-	font-weight: bold;
+    list-style: none;
+    float: left;
+    width: 12%;
+    font-weight: bold;
 }
--- a/extensions/debug/assets/toolbar.css
+++ b/extensions/debug/assets/toolbar.css
@ -1,187 +1,187 @@
 #yii-debug-toolbar {
-	padding: 0;
-	font: 11px Verdana, Arial, sans-serif;
-	text-align: left;
-	min-height: 40px;
-	overflow: auto;
-	background: rgb(246,246,246);
-	background: -moz-linear-gradient(top,  rgba(237,237,237,1) 0%, rgba(246,246,246,1) 53%, rgba(255,255,255,1) 100%);
-	background: -webkit-gradient(linear, left top, left bottom, color-stop(0%,rgba(237,237,237,1)), color-stop(53%,rgba(246,246,246,1)), color-stop(100%,rgba(255,255,255,1)));
-	background: -webkit-linear-gradient(top,  rgba(237,237,237,1) 0%,rgba(246,246,246,1) 53%,rgba(255,255,255,1) 100%);
-	background: -o-linear-gradient(top,  rgba(237,237,237,1) 0%,rgba(246,246,246,1) 53%,rgba(255,255,255,1) 100%);
-	background: -ms-linear-gradient(top,  rgba(237,237,237,1) 0%,rgba(246,246,246,1) 53%,rgba(255,255,255,1) 100%);
-	background: linear-gradient(to bottom,  rgba(237,237,237,1) 0%,rgba(246,246,246,1) 53%,rgba(255,255,255,1) 100%);
-	filter: progid:DXImageTransform.Microsoft.gradient( startColorstr='#ededed', endColorstr='#ffffff',GradientType=0 );
-	background: rgb(246,246,246) url(data:image/svg+xml;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAAoCAYAAAA/tpB3AAAAAXNSR0IArs4c6QAAAAZiS0dEAP8A/wD/oL2nkwAAAAlwSFlzAAALEwAACxMBAJqcGAAAAAd0SU1FB94BBQwuINct3v0AAAAjSURBVAjXY3j79u1/JgYGBgYkgpGRkYEYMSpKUGLK+/fvGQAaDAb6F86IsAAAAABJRU5ErkJggg==); /* generated using "cat assets/bg.png | base64" */
+    padding: 0;
+    font: 11px Verdana, Arial, sans-serif;
+    text-align: left;
+    min-height: 40px;
+    overflow: auto;
+    background: rgb(246,246,246);
+    background: -moz-linear-gradient(top,  rgba(237,237,237,1) 0%, rgba(246,246,246,1) 53%, rgba(255,255,255,1) 100%);
+    background: -webkit-gradient(linear, left top, left bottom, color-stop(0%,rgba(237,237,237,1)), color-stop(53%,rgba(246,246,246,1)), color-stop(100%,rgba(255,255,255,1)));
+    background: -webkit-linear-gradient(top,  rgba(237,237,237,1) 0%,rgba(246,246,246,1) 53%,rgba(255,255,255,1) 100%);
+    background: -o-linear-gradient(top,  rgba(237,237,237,1) 0%,rgba(246,246,246,1) 53%,rgba(255,255,255,1) 100%);
+    background: -ms-linear-gradient(top,  rgba(237,237,237,1) 0%,rgba(246,246,246,1) 53%,rgba(255,255,255,1) 100%);
+    background: linear-gradient(to bottom,  rgba(237,237,237,1) 0%,rgba(246,246,246,1) 53%,rgba(255,255,255,1) 100%);
+    filter: progid:DXImageTransform.Microsoft.gradient( startColorstr='#ededed', endColorstr='#ffffff',GradientType=0 );
+    background: rgb(246,246,246) url(data:image/svg+xml;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAAoCAYAAAA/tpB3AAAAAXNSR0IArs4c6QAAAAZiS0dEAP8A/wD/oL2nkwAAAAlwSFlzAAALEwAACxMBAJqcGAAAAAd0SU1FB94BBQwuINct3v0AAAAjSURBVAjXY3j79u1/JgYGBgYkgpGRkYEYMSpKUGLK+/fvGQAaDAb6F86IsAAAAABJRU5ErkJggg==); /* generated using "cat assets/bg.png | base64" */
 }

 .yii-debug-toolbar-top {
-	margin: 0 0 20px 0;
-	border-bottom: 1px solid #e4e4e4;
+    margin: 0 0 20px 0;
+    border-bottom: 1px solid #e4e4e4;
 }

 .yii-debug-toolbar-bottom {
-	position: fixed;
-	left: 0;
-	right: 0;
-	bottom: 0;
-	margin: 0;
-	z-index: 1000000;
-	border-top: 1px solid #ccc;
+    position: fixed;
+    left: 0;
+    right: 0;
+    bottom: 0;
+    margin: 0;
+    z-index: 1000000;
+    border-top: 1px solid #ccc;
 }

 .yii-debug-toolbar-block {
-	float: left;
-	margin: 0;
-	border-right: 1px solid #e4e4e4;
-	padding: 4px 8px;
-	line-height: 32px;
-	white-space: nowrap;
+    float: left;
+    margin: 0;
+    border-right: 1px solid #e4e4e4;
+    padding: 4px 8px;
+    line-height: 32px;
+    white-space: nowrap;
 }

 .yii-debug-toolbar-block a {
-	text-decoration: none;
-	color: black;
+    text-decoration: none;
+    color: black;
 }

 .yii-debug-toolbar-block span {
 }

 .yii-debug-toolbar-block img {
-	vertical-align: middle;
+    vertical-align: middle;
 }

 #yii-debug-toolbar .label {
-	display: inline-block;
-	padding: 2px 4px;
-	font-size: 11.844px;
-	font-weight: normal;
-	line-height: 14px;
-	color: #ffffff;
-	text-shadow: 0 -1px 0 rgba(0, 0, 0, 0.25);
-	white-space: nowrap;
-	vertical-align: baseline;
-	background-color: #999999;
+    display: inline-block;
+    padding: 2px 4px;
+    font-size: 11.844px;
+    font-weight: normal;
+    line-height: 14px;
+    color: #ffffff;
+    text-shadow: 0 -1px 0 rgba(0, 0, 0, 0.25);
+    white-space: nowrap;
+    vertical-align: baseline;
+    background-color: #999999;
 }

 #yii-debug-toolbar .label {
-	-webkit-border-radius: 3px;
-	-moz-border-radius: 3px;
-	border-radius: 3px;
+    -webkit-border-radius: 3px;
+    -moz-border-radius: 3px;
+    border-radius: 3px;
 }

 #yii-debug-toolbar .label:empty {
-	display: none;
+    display: none;
 }

 #yii-debug-toolbar a.label:hover,
 #yii-debug-toolbar a.label:focus {
-	color: #ffffff;
-	text-decoration: none;
-	cursor: pointer;
+    color: #ffffff;
+    text-decoration: none;
+    cursor: pointer;
 }

 #yii-debug-toolbar .label-important {
-	background-color: #b94a48;
+    background-color: #b94a48;
 }

 #yii-debug-toolbar .label-important[href] {
-	background-color: #953b39;
+    background-color: #953b39;
 }

 #yii-debug-toolbar .label-warning,
 #yii-debug-toolbar .badge-warning {
-	background-color: #f89406;
+    background-color: #f89406;
 }

 #yii-debug-toolbar .label-warning[href] {
-	background-color: #c67605;
+    background-color: #c67605;
 }

 #yii-debug-toolbar .label-success {
-	background-color: #468847;
+    background-color: #468847;
 }

 #yii-debug-toolbar .label-success[href] {
-	background-color: #356635;
+    background-color: #356635;
 }

 #yii-debug-toolbar .label-info {
-	background-color: #3a87ad;
+    background-color: #3a87ad;
 }

 #yii-debug-toolbar .label-info[href] {
-	background-color: #2d6987;
+    background-color: #2d6987;
 }

 #yii-debug-toolbar .label-inverse,
 #yii-debug-toolbar .badge-inverse {
-	background-color: #333333;
+    background-color: #333333;
 }

 #yii-debug-toolbar .label-inverse[href],
 #yii-debug-toolbar .badge-inverse[href] {
-	background-color: #1a1a1a;
+    background-color: #1a1a1a;
 }

 .yii-debug-toolbar-toggler {
-	cursor: pointer;
-	position: absolute;
-	right: 10px;
-	bottom: 4px;
-	width: 15px;
-	height: 30px;
-	font-size: 25px;
-	font-weight: 100;
-	line-height: 28px;
-	color: #ffffff;
-	text-align: center;
-	background: #666666;
-	-webkit-border-radius: 12px;
-	-moz-border-radius: 12px;
-	border-radius: 12px;
-	opacity: 0.5;
-	filter: alpha(opacity=50);
+    cursor: pointer;
+    position: absolute;
+    right: 10px;
+    bottom: 4px;
+    width: 15px;
+    height: 30px;
+    font-size: 25px;
+    font-weight: 100;
+    line-height: 28px;
+    color: #ffffff;
+    text-align: center;
+    background: #666666;
+    -webkit-border-radius: 12px;
+    -moz-border-radius: 12px;
+    border-radius: 12px;
+    opacity: 0.5;
+    filter: alpha(opacity=50);
 }

 .yii-debug-toolbar-toggler:hover,
 .yii-debug-toolbar-toggler:focus {
-	color: #ffffff;
-	text-decoration: none;
-	opacity: 0.9;
-	filter: alpha(opacity=90);
+    color: #ffffff;
+    text-decoration: none;
+    opacity: 0.9;
+    filter: alpha(opacity=90);
 }

 #yii-debug-toolbar-min {
-	display: none;
-	position: fixed;
-	right: 0;
-	bottom: 0;
-	margin: 0;
-	padding: 0;
-	z-index: 1000000;
-	font: 11px Verdana, Arial, sans-serif;
-	text-align: left;
-	width: 63px;
-	height: 38px;
-	border-top: 1px solid #ccc;
-	border-left: 1px solid #ccc;
-	-webkit-border-top-left-radius: 6px;
-	-moz-border-top-left-radius: 6px;
-	border-top-left-radius: 6px;
-	background: rgb(237,237,237);
-	background: url(data:image/svg+xml;base64,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);
-	background: -moz-linear-gradient(top,  rgba(237,237,237,1) 0%, rgba(246,246,246,1) 53%, rgba(255,255,255,1) 100%);
-	background: -webkit-gradient(linear, left top, left bottom, color-stop(0%,rgba(237,237,237,1)), color-stop(53%,rgba(246,246,246,1)), color-stop(100%,rgba(255,255,255,1)));
-	background: -webkit-linear-gradient(top,  rgba(237,237,237,1) 0%,rgba(246,246,246,1) 53%,rgba(255,255,255,1) 100%);
-	background: -o-linear-gradient(top,  rgba(237,237,237,1) 0%,rgba(246,246,246,1) 53%,rgba(255,255,255,1) 100%);
-	background: -ms-linear-gradient(top,  rgba(237,237,237,1) 0%,rgba(246,246,246,1) 53%,rgba(255,255,255,1) 100%);
-	background: linear-gradient(to bottom,  rgba(237,237,237,1) 0%,rgba(246,246,246,1) 53%,rgba(255,255,255,1) 100%);
-	filter: progid:DXImageTransform.Microsoft.gradient( startColorstr='#ededed', endColorstr='#ffffff',GradientType=0 );
+    display: none;
+    position: fixed;
+    right: 0;
+    bottom: 0;
+    margin: 0;
+    padding: 0;
+    z-index: 1000000;
+    font: 11px Verdana, Arial, sans-serif;
+    text-align: left;
+    width: 63px;
+    height: 38px;
+    border-top: 1px solid #ccc;
+    border-left: 1px solid #ccc;
+    -webkit-border-top-left-radius: 6px;
+    -moz-border-top-left-radius: 6px;
+    border-top-left-radius: 6px;
+    background: rgb(237,237,237);
+    background: url(data:image/svg+xml;base64,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);
+    background: -moz-linear-gradient(top,  rgba(237,237,237,1) 0%, rgba(246,246,246,1) 53%, rgba(255,255,255,1) 100%);
+    background: -webkit-gradient(linear, left top, left bottom, color-stop(0%,rgba(237,237,237,1)), color-stop(53%,rgba(246,246,246,1)), color-stop(100%,rgba(255,255,255,1)));
+    background: -webkit-linear-gradient(top,  rgba(237,237,237,1) 0%,rgba(246,246,246,1) 53%,rgba(255,255,255,1) 100%);
+    background: -o-linear-gradient(top,  rgba(237,237,237,1) 0%,rgba(246,246,246,1) 53%,rgba(255,255,255,1) 100%);
+    background: -ms-linear-gradient(top,  rgba(237,237,237,1) 0%,rgba(246,246,246,1) 53%,rgba(255,255,255,1) 100%);
+    background: linear-gradient(to bottom,  rgba(237,237,237,1) 0%,rgba(246,246,246,1) 53%,rgba(255,255,255,1) 100%);
+    filter: progid:DXImageTransform.Microsoft.gradient( startColorstr='#ededed', endColorstr='#ffffff',GradientType=0 );
 }

 #yii-debug-toolbar-logo {
-	position: fixed;
-	right: 31px;
-	bottom: 4px;
+    position: fixed;
+    right: 31px;
+    bottom: 4px;
 }
--- a/extensions/elasticsearch/README.md
+++ b/extensions/elasticsearch/README.md
@ -9,8 +9,8 @@ To use this extension, you have to configure the Connection class in your applic

 ```php
 return [
-	//....
-	'components' => [
+    //....
+    'components' => [
        'elasticsearch' => [
            'class' => 'yii\elasticsearch\Connection',
            'nodes' => [
@ -18,7 +18,7 @@ return [
                // configure more hosts if you have a cluster
            ],
        ],
-	]
+    ]
 ];
 ```

@ -152,11 +152,11 @@ $result = Article::find()->query(["field" => ["title" => "yii"]])->all(); // art

 // http://www.elasticsearch.org/guide/en/elasticsearch/reference/current/query-dsl-flt-query.html
 $query = Article::find()->query([
-	"fuzzy_like_this" => [
-		"fields" => ["title", "description"],
-		"like_text" => "This query will return articles that are similar to this text :-)",
+    "fuzzy_like_this" => [
+        "fields" => ["title", "description"],
+        "like_text" => "This query will return articles that are similar to this text :-)",
        "max_query_terms" : 12
-	]
+    ]
 ]);

 $query->all(); // gives you all the documents
@ -179,19 +179,19 @@ Add the following to you application config to enable it (if you already have th
 enabled, it is sufficient to just add the panels configuration):

 ```php
-	// ...
-	'bootstrap' => ['debug'],
-	'modules' => [
-		'debug' => [
-			'class' => 'yii\\debug\\Module',
-			'panels' => [
-				'elasticsearch' => [
-					'class' => 'yii\\elasticsearch\\DebugPanel',
-				],
-			],
-		],
-	],
-	// ...
+    // ...
+    'bootstrap' => ['debug'],
+    'modules' => [
+        'debug' => [
+            'class' => 'yii\\debug\\Module',
+            'panels' => [
+                'elasticsearch' => [
+                    'class' => 'yii\\elasticsearch\\DebugPanel',
+                ],
+            ],
+        ],
+    ],
+    // ...
 ```

 ![elasticsearch DebugPanel](images/README-debug.png)
--- a/extensions/faker/README.md
+++ b/extensions/faker/README.md
@ -31,9 +31,9 @@ To use this extension,  simply add the following code in your application config

 ```php
 'controllerMap' => [
-	'fixture' => [
-		'class' => 'yii\faker\FixtureController',
-	],
+    'fixture' => [
+        'class' => 'yii\faker\FixtureController',
+    ],
 ],
 ```
 Set valid ```test``` alias in your console config, for example for ```basic``` application template, this should be added
@ -44,17 +44,17 @@ generate fixtures template files, according to the given format:
 ```php
 //users.php file under template path (by default @tests/unit/templates/fixtures)
 return [
-	[
-		'table_column0' => 'faker_formatter',
-		...
-		'table_columnN' => 'other_faker_formatter'
-		'body' => function ($fixture, $faker, $index) {
-			//set needed fixture fields based on different conditions
-
-			$fixture['body'] = $faker->sentence(7,true); //generate sentence exact with 7 words.
-			return $fixture;
-		}
-	],
+    [
+        'table_column0' => 'faker_formatter',
+        ...
+        'table_columnN' => 'other_faker_formatter'
+        'body' => function ($fixture, $faker, $index) {
+            //set needed fixture fields based on different conditions
+
+            $fixture['body'] = $faker->sentence(7,true); //generate sentence exact with 7 words.
+            return $fixture;
+        }
+    ],
 ];
 ```

@ -72,17 +72,17 @@ Another example of valid template:
 use yii\helpers\Security;

 return [
-	'name' => 'firstName',
-	'phone' => 'phoneNumber',
-	'city' => 'city',
-	'password' => function ($fixture, $faker, $index) {
-		$fixture['password'] = Security::generatePasswordHash('password_' . $index);
-		return $fixture;
-	},
-	'auth_key' => function ($fixture, $faker, $index) {
-		$fixture['auth_key'] = Security::generateRandomKey();
-		return $fixture;
-	},
+    'name' => 'firstName',
+    'phone' => 'phoneNumber',
+    'city' => 'city',
+    'password' => function ($fixture, $faker, $index) {
+        $fixture['password'] = Security::generatePasswordHash('password_' . $index);
+        return $fixture;
+    },
+    'auth_key' => function ($fixture, $faker, $index) {
+        $fixture['auth_key'] = Security::generateRandomKey();
+        return $fixture;
+    },
 ];
 ```

@ -135,16 +135,16 @@ After you created custom provider, for example:
 ```php
 class Book extends \Faker\Provider\Base
 {
-	public function title($nbWords = 5)
-	{
-		$sentence = $this->generator->sentence($nbWords);
-		return mb_substr($sentence, 0, mb_strlen($sentence) - 1);
-	}
+    public function title($nbWords = 5)
+    {
+        $sentence = $this->generator->sentence($nbWords);
+        return mb_substr($sentence, 0, mb_strlen($sentence) - 1);
+    }

-	public function ISBN()
-	{
-		return $this->generator->randomNumber(13);
-	}
+    public function ISBN()
+    {
+        return $this->generator->randomNumber(13);
+    }

 }
 ```
@ -153,11 +153,11 @@ You can use it by adding it to the ```$providers``` property of the current comm

 ```php
 'controllerMap' => [
-	'fixture' => [
-		'class' => 'yii\faker\FixtureController',
-		'providers' => [
-			'app\tests\unit\faker\providers\Book',
-		],
-	],
+    'fixture' => [
+        'class' => 'yii\faker\FixtureController',
+        'providers' => [
+            'app\tests\unit\faker\providers\Book',
+        ],
+    ],
 ]
 ```
--- a/extensions/gii/assets/main.css
+++ b/extensions/gii/assets/main.css
@ -1,217 +1,217 @@
 body {
-	padding-top: 70px;
+    padding-top: 70px;
 }

 .footer {
-	border-top: 1px solid #ddd;
-	margin-top: 30px;
-	padding: 15px 0 30px;
+    border-top: 1px solid #ddd;
+    margin-top: 30px;
+    padding: 15px 0 30px;
 }

 .jumbotron {
-	text-align: center;
-	background-color: transparent;
+    text-align: center;
+    background-color: transparent;
 }

 .jumbotron .btn {
-	font-size: 21px;
-	padding: 14px 24px;
+    font-size: 21px;
+    padding: 14px 24px;
 }

 .navbar-brand {
-	padding: 0;
-	margin: 0;
+    padding: 0;
+    margin: 0;
 }

 .default-index .generator {
-	min-height: 200px;
-	margin-bottom: 20px;
+    min-height: 200px;
+    margin-bottom: 20px;
 }

 .list-group .glyphicon {
-	float: right;
+    float: right;
 }

 .popover {
-	max-width: 400px;
-	width: 400px;
+    max-width: 400px;
+    width: 400px;
 }

 .hint-block {
-	display: none;
+    display: none;
 }

 .error-summary {
-	color: #a94442;
-	background: #fdf7f7;
-	border-left: 3px solid #eed3d7;
-	padding: 10px 20px;
-	margin: 0 0 15px 0;
+    color: #a94442;
+    background: #fdf7f7;
+    border-left: 3px solid #eed3d7;
+    padding: 10px 20px;
+    margin: 0 0 15px 0;
 }

 .default-view .sticky-value {
-	padding: 6px 12px;
-	background: lightyellow;
-	white-space: pre;
-	word-wrap: break-word;
+    padding: 6px 12px;
+    background: lightyellow;
+    white-space: pre;
+    word-wrap: break-word;
 }

 .default-view .form-group label.help {
-	border-bottom: 1px dashed #888;
-	cursor: help;
+    border-bottom: 1px dashed #888;
+    cursor: help;
 }

 .default-view .modal-dialog {
-	width: 800px;
+    width: 800px;
 }

 .default-view .modal-dialog .error {
-	color: #d9534f;
+    color: #d9534f;
 }

 .default-view .modal-dialog .content {
-	background: #fafafa;
-	border-left: #eee 5px solid;
-	padding: 5px 10px;
-	overflow: auto;
+    background: #fafafa;
+    border-left: #eee 5px solid;
+    padding: 5px 10px;
+    overflow: auto;
 }

 .default-view .modal-dialog code {
-	background: transparent;
+    background: transparent;
 }

 .default-view-files table .action {
-	width: 100px;
+    width: 100px;
 }

 .default-view-files table .check {
-	width: 25px;
-	text-align: center;
+    width: 25px;
+    text-align: center;
 }

 .default-view-results pre {
-	overflow: auto;
-	background-color: #333;
-	max-height: 300px;
-	color: white;
-	padding: 10px;
-	border-radius: 0;
-	white-space: nowrap;
+    overflow: auto;
+    background-color: #333;
+    max-height: 300px;
+    color: white;
+    padding: 10px;
+    border-radius: 0;
+    white-space: nowrap;
 }

 .default-view-results pre .error {
-	background: #FFE0E1;
-	color: black;
-	padding: 1px;
+    background: #FFE0E1;
+    color: black;
+    padding: 1px;
 }

 .default-view-results .alert pre {
-	background: white;
+    background: white;
 }

 .default-diff pre {
-	padding: 0;
-	margin: 0;
-	background: transparent;
-	border: none;
+    padding: 0;
+    margin: 0;
+    background: transparent;
+    border: none;
 }

 .default-diff pre del {
-	background: pink;
+    background: pink;
 }

 .default-diff pre ins {
-	background: lightgreen;
-	text-decoration: none;
+    background: lightgreen;
+    text-decoration: none;
 }


 .Differences {
-	width: 100%;
-	border-collapse: collapse;
-	border-spacing: 0;
-	empty-cells: show;
+    width: 100%;
+    border-collapse: collapse;
+    border-spacing: 0;
+    empty-cells: show;
 }

 .Differences thead {
-	display: none;
+    display: none;
 }

 .Differences tbody th {
-	text-align: right;
-	background: #FAFAFA;
-	padding: 1px 2px;
-	border-right: 1px solid #eee;
-	vertical-align: top;
-	font-size: 13px;
-	font-family: Monaco, Menlo, Consolas, 'Courier New', monospace;
-	font-weight: normal;
-	color: #999;
-	width: 5px;
+    text-align: right;
+    background: #FAFAFA;
+    padding: 1px 2px;
+    border-right: 1px solid #eee;
+    vertical-align: top;
+    font-size: 13px;
+    font-family: Monaco, Menlo, Consolas, 'Courier New', monospace;
+    font-weight: normal;
+    color: #999;
+    width: 5px;
 }

 .Differences td {
-	padding: 1px 2px;
-	font-size: 13px;
-	font-family: Monaco, Menlo, Consolas, 'Courier New', monospace;
+    padding: 1px 2px;
+    font-size: 13px;
+    font-family: Monaco, Menlo, Consolas, 'Courier New', monospace;
 }

 .DifferencesSideBySide .ChangeInsert td.Left {
-	background: #dfd;
+    background: #dfd;
 }

 .DifferencesSideBySide .ChangeInsert td.Right {
-	background: #cfc;
+    background: #cfc;
 }

 .DifferencesSideBySide .ChangeDelete td.Left {
-	background: #f88;
+    background: #f88;
 }

 .DifferencesSideBySide .ChangeDelete td.Right {
-	background: #faa;
+    background: #faa;
 }

 .DifferencesSideBySide .ChangeReplace .Left {
-	background: #fe9;
+    background: #fe9;
 }

 .DifferencesSideBySide .ChangeReplace .Right {
-	background: #fd8;
+    background: #fd8;
 }

 .Differences ins, .Differences del {
-	text-decoration: none;
+    text-decoration: none;
 }

 .DifferencesSideBySide .ChangeReplace ins, .DifferencesSideBySide .ChangeReplace del {
-	background: #fc0;
+    background: #fc0;
 }

 .Differences .Skipped {
-	background: #f7f7f7;
+    background: #f7f7f7;
 }

 .DifferencesInline .ChangeReplace .Left,
 .DifferencesInline .ChangeDelete .Left {
-	background: #fdd;
+    background: #fdd;
 }

 .DifferencesInline .ChangeReplace .Right,
 .DifferencesInline .ChangeInsert .Right {
-	background: #dfd;
+    background: #dfd;
 }

 .DifferencesInline .ChangeReplace ins {
-	background: #9e9;
+    background: #9e9;
 }

 .DifferencesInline .ChangeReplace del {
-	background: #e99;
+    background: #e99;
 }

 .DifferencesInline th[data-line-number]:before {
-	content: attr(data-line-number);
+    content: attr(data-line-number);
 }

 /* additional styles for typeahead.js-bootstrap.css */
--- a/extensions/gii/generators/extension/default/composer.json
+++ b/extensions/gii/generators/extension/default/composer.json
@ -1,18 +1,18 @@
 {
-    "name": "<?= $generator->vendorName ?>/<?= $generator->packageName ?>",
-    "description": "<?= $generator->description ?>",
-    "type": "<?= $generator->type ?>",
-    "keywords": <?= $generator->keywordsArrayJson ?>,
-    "license": "<?= $generator->license ?>",
-    "authors": [
-        {
-            "name": "<?= $generator->authorName ?>",
-            "email": "<?= $generator->authorEmail ?>"
-        }
-    ],
-    "autoload": {
-        "psr-4": {
-            "<?= str_replace('\\','\\\\',$generator->namespace) ?>": ""
-        }
-    }
+	"name": "<?= $generator->vendorName ?>/<?= $generator->packageName ?>",
+	"description": "<?= $generator->description ?>",
+	"type": "<?= $generator->type ?>",
+	"keywords": <?= $generator->keywordsArrayJson ?>,
+	"license": "<?= $generator->license ?>",
+	"authors": [
+		{
+			"name": "<?= $generator->authorName ?>",
+			"email": "<?= $generator->authorEmail ?>"
+		}
+	],
+	"autoload": {
+		"psr-4": {
+			"<?= str_replace('\\','\\\\',$generator->namespace) ?>": ""
+		}
+	}
 }
--- a/extensions/imagine/composer.json
+++ b/extensions/imagine/composer.json
@ -1,29 +1,29 @@
 {
-    "name": "yiisoft/yii2-imagine",
-    "description": "The Imagine integration for the Yii framework",
-    "keywords": ["yii2", "imagine", "image", "helper"],
-    "type": "yii2-extension",
-    "license": "BSD-3-Clause",
-    "support": {
-        "issues": "https://github.com/yiisoft/yii2/issues?labels=ext%3Aimagine",
-        "forum": "http://www.yiiframework.com/forum/",
-        "wiki": "http://www.yiiframework.com/wiki/",
-        "irc": "irc://irc.freenode.net/yii",
-        "source": "https://github.com/yiisoft/yii2"
-    },
-    "authors": [
-        {
-            "name": "Antonio Ramirez",
-            "email": "amigo.cobos@gmail.com"
-        }
-    ],
-    "require": {
-        "yiisoft/yii2": "*",
-        "imagine/imagine": "v0.5.0"
-    },
-    "autoload": {
-        "psr-4": {
-            "yii\\imagine\\": ""
-        }
-    }
+	"name": "yiisoft/yii2-imagine",
+	"description": "The Imagine integration for the Yii framework",
+	"keywords": ["yii2", "imagine", "image", "helper"],
+	"type": "yii2-extension",
+	"license": "BSD-3-Clause",
+	"support": {
+		"issues": "https://github.com/yiisoft/yii2/issues?labels=ext%3Aimagine",
+		"forum": "http://www.yiiframework.com/forum/",
+		"wiki": "http://www.yiiframework.com/wiki/",
+		"irc": "irc://irc.freenode.net/yii",
+		"source": "https://github.com/yiisoft/yii2"
+	},
+	"authors": [
+		{
+			"name": "Antonio Ramirez",
+			"email": "amigo.cobos@gmail.com"
+		}
+	],
+	"require": {
+		"yiisoft/yii2": "*",
+		"imagine/imagine": "v0.5.0"
+	},
+	"autoload": {
+		"psr-4": {
+			"yii\\imagine\\": ""
+		}
+	}
 }
--- a/extensions/mongodb/README.md
+++ b/extensions/mongodb/README.md
@ -33,13 +33,13 @@ To use this extension, simply add the following code in your application configu

 ```php
 return [
-	//....
-	'components' => [
-		'mongodb' => [
-			'class' => '\yii\mongodb\Connection',
-			'dsn' => 'mongodb://developer:password@localhost:27017/mydatabase',
-		],
-	],
+    //....
+    'components' => [
+        'mongodb' => [
+            'class' => '\yii\mongodb\Connection',
+            'dsn' => 'mongodb://developer:password@localhost:27017/mydatabase',
+        ],
+    ],
 ];
 ```

@ -59,8 +59,8 @@ use yii\mongodb\Query;
 $query = new Query;
 // compose the query
 $query->select(['name', 'status'])
-	->from('customer')
-	->limit(10);
+    ->from('customer')
+    ->limit(10);
 // execute the query
 $rows = $query->all();
 ```
@ -103,17 +103,17 @@ use yii\mongodb\Query;

 class ItemController extends Controller
 {
-	/**
-	 * @param string $id MongoId string (not object)
-	 */
-	public function actionUpdate($id)
-	{
-		$query = new Query;
-		$row = $query->from('item')
-			where(['_id' => $id]) // implicit typecast to [[\MongoId]]
-			->one();
-		...
-	}
+    /**
+     * @param string $id MongoId string (not object)
+     */
+    public function actionUpdate($id)
+    {
+        $query = new Query;
+        $row = $query->from('item')
+            where(['_id' => $id]) // implicit typecast to [[\MongoId]]
+            ->one();
+        ...
+    }
 }
 ```

@ -133,21 +133,21 @@ use yii\mongodb\ActiveRecord;

 class Customer extends ActiveRecord
 {
-	/**
-	 * @return string the name of the index associated with this ActiveRecord class.
-	 */
-	public static function collectionName()
-	{
-		return 'customer';
-	}
-
-	/**
-	 * @return array list of attribute names.
-	 */
-	public function attributes()
-	{
-		return ['_id', 'name', 'email', 'address', 'status'];
-	}
+    /**
+     * @return string the name of the index associated with this ActiveRecord class.
+     */
+    public static function collectionName()
+    {
+        return 'customer';
+    }
+
+    /**
+     * @return array list of attribute names.
+     */
+    public function attributes()
+    {
+        return ['_id', 'name', 'email', 'address', 'status'];
+    }
 }
 ```

@ -162,10 +162,10 @@ use yii\mongodb\Query;
 $query = new Query;
 $query->from('customer')->where(['status' => 2]);
 $provider = new ActiveDataProvider([
-	'query' => $query,
-	'pagination' => [
-		'pageSize' => 10,
-	]
+    'query' => $query,
+    'pagination' => [
+        'pageSize' => 10,
+    ]
 ]);
 $models = $provider->getModels();
 ```
@ -175,10 +175,10 @@ use yii\data\ActiveDataProvider;
 use app\models\Customer;

 $provider = new ActiveDataProvider([
-	'query' => Customer::find(),
-	'pagination' => [
-		'pageSize' => 10,
-	]
+    'query' => Customer::find(),
+    'pagination' => [
+        'pageSize' => 10,
+    ]
 ]);
 $models = $provider->getModels();
 ```
@ -193,11 +193,11 @@ For example: instead of:

 ```
 {
-	content: "some content",
-	author: {
-		name: author1,
-		email: author1@domain.com
-	}
+    content: "some content",
+    author: {
+        name: author1,
+        email: author1@domain.com
+    }
 }
 ```

@ -205,9 +205,9 @@ use following:

 ```
 {
-	content: "some content",
-	author_name: author1,
-	author_email: author1@domain.com
+    content: "some content",
+    author_name: author1,
+    author_email: author1@domain.com
 }
 ```

@ -231,13 +231,13 @@ you also have to configure the `cache` component to be `yii\mongodb\Cache`:

 ```php
 return [
-	//....
-	'components' => [
-		// ...
-		'cache' => [
-			'class' => 'yii\mongodb\Cache',
-		],
-	]
+    //....
+    'components' => [
+        // ...
+        'cache' => [
+            'class' => 'yii\mongodb\Cache',
+        ],
+    ]
 ];
 ```

@ -250,12 +250,12 @@ you also have to configure the `session` component to be `yii\mongodb\Session`:

 ```php
 return [
-	//....
-	'components' => [
-		// ...
-		'session' => [
-			'class' => 'yii\mongodb\Session',
-		],
-	]
+    //....
+    'components' => [
+        // ...
+        'session' => [
+            'class' => 'yii\mongodb\Session',
+        ],
+    ]
 ];
 ```
--- a/extensions/redis/README.md
+++ b/extensions/redis/README.md
@ -9,15 +9,15 @@ To use this extension, you have to configure the Connection class in your applic

 ```php
 return [
-	//....
-	'components' => [
+    //....
+    'components' => [
        'redis' => [
            'class' => 'yii\redis\Connection',
            'hostname' => 'localhost',
            'port' => 6379,
            'database' => 0,
        ],
-	]
+    ]
 ];
 ```

@ -54,13 +54,13 @@ you also have to configure the `cache` component to be `yii\redis\Cache`:

 ```php
 return [
-	//....
-	'components' => [
-		// ...
-		'cache' => [
-			'class' => 'yii\redis\Cache',
-		],
-	]
+    //....
+    'components' => [
+        // ...
+        'cache' => [
+            'class' => 'yii\redis\Cache',
+        ],
+    ]
 ];
 ```

@ -69,18 +69,18 @@ cache component (no connection application component needs to be configured in t

 ```php
 return [
-	//....
-	'components' => [
-		// ...
-		'cache' => [
-			'class' => 'yii\redis\Cache',
-			'redis' => [
-				'hostname' => 'localhost',
-				'port' => 6379,
-				'database' => 0,
-			],
-		],
-	]
+    //....
+    'components' => [
+        // ...
+        'cache' => [
+            'class' => 'yii\redis\Cache',
+            'redis' => [
+                'hostname' => 'localhost',
+                'port' => 6379,
+                'database' => 0,
+            ],
+        ],
+    ]
 ];
 ```

@ -92,13 +92,13 @@ you also have to configure the `session` component to be `yii\redis\Session`:

 ```php
 return [
-	//....
-	'components' => [
-		// ...
-		'session' => [
-			'class' => 'yii\redis\Session',
-		],
-	]
+    //....
+    'components' => [
+        // ...
+        'session' => [
+            'class' => 'yii\redis\Session',
+        ],
+    ]
 ];
 ```

@ -107,18 +107,18 @@ cache component (no connection application component needs to be configured in t

 ```php
 return [
-	//....
-	'components' => [
-		// ...
-		'session' => [
-			'class' => 'yii\redis\Session',
-			'redis' => [
-				'hostname' => 'localhost',
-				'port' => 6379,
-				'database' => 0,
-			],
-		],
-	]
+    //....
+    'components' => [
+        // ...
+        'session' => [
+            'class' => 'yii\redis\Session',
+            'redis' => [
+                'hostname' => 'localhost',
+                'port' => 6379,
+                'database' => 0,
+            ],
+        ],
+    ]
 ];
 ```

@ -139,29 +139,29 @@ The following is an example model called `Customer`:
 ```php
 class Customer extends \yii\redis\ActiveRecord
 {
-	/**
-	 * @return array the list of attributes for this record
-	 */
-	public function attributes()
-	{
-		return ['id', 'name', 'address', 'registration_date'];
-	}
-
-	/**
-	 * @return ActiveQuery defines a relation to the Order record (can be in other database, e.g. elasticsearch or sql)
-	 */
-	public function getOrders()
-	{
-		return $this->hasMany(Order::className(), ['customer_id' => 'id']);
-	}
-
-	/**
-	 * Defines a scope that modifies the `$query` to return only active(status = 1) customers
-	 */
-	public static function active($query)
-	{
-		$query->andWhere(['status' => 1]);
-	}
+    /**
+     * @return array the list of attributes for this record
+     */
+    public function attributes()
+    {
+        return ['id', 'name', 'address', 'registration_date'];
+    }
+
+    /**
+     * @return ActiveQuery defines a relation to the Order record (can be in other database, e.g. elasticsearch or sql)
+     */
+    public function getOrders()
+    {
+        return $this->hasMany(Order::className(), ['customer_id' => 'id']);
+    }
+
+    /**
+     * Defines a scope that modifies the `$query` to return only active(status = 1) customers
+     */
+    public static function active($query)
+    {
+        $query->andWhere(['status' => 1]);
+    }
 }
 ```

--- a/extensions/smarty/README.md
+++ b/extensions/smarty/README.md
@ -7,17 +7,17 @@ To use this extension, simply add the following code in your application configu

 ```php
 return [
-	//....
-	'components' => [
-		'view' => [
-			'renderers' => [
-				'tpl' => [
-					'class' => 'yii\smarty\ViewRenderer',
-					//'cachePath' => '@runtime/Smarty/cache',
-				],
-			],
-		],
-	],
+    //....
+    'components' => [
+        'view' => [
+            'renderers' => [
+                'tpl' => [
+                    'class' => 'yii\smarty\ViewRenderer',
+                    //'cachePath' => '@runtime/Smarty/cache',
+                ],
+            ],
+        ],
+    ],
 ];
 ```

--- a/extensions/sphinx/README.md
+++ b/extensions/sphinx/README.md
@ -33,8 +33,8 @@ In order to setup Sphinx "searchd" to support MySQL protocol following configura
 ```
 searchd
 {
-	listen = localhost:9306:mysql41
-	...
+    listen = localhost:9306:mysql41
+    ...
 }
 ```

@ -46,15 +46,15 @@ To use this extension, simply add the following code in your application configu

 ```php
 return [
-	//....
-	'components' => [
-		'sphinx' => [
-			'class' => 'yii\sphinx\Connection',
-			'dsn' => 'mysql:host=127.0.0.1;port=9306;',
-			'username' => '',
-			'password' => '',
-		],
-	],
+    //....
+    'components' => [
+        'sphinx' => [
+            'class' => 'yii\sphinx\Connection',
+            'dsn' => 'mysql:host=127.0.0.1;port=9306;',
+            'username' => '',
+            'password' => '',
+        ],
+    ],
 ];
 ```

@ -67,13 +67,13 @@ use yii\sphinx\ActiveRecord;

 class Article extends ActiveRecord
 {
-	/**
-	 * @return string the name of the index associated with this ActiveRecord class.
-	 */
-	public static function indexName()
-	{
-		return 'idx_article';
-	}
+    /**
+     * @return string the name of the index associated with this ActiveRecord class.
+     */
+    public static function indexName()
+    {
+        return 'idx_article';
+    }
 }
 ```

@ -86,10 +86,10 @@ use yii\sphinx\Query;
 $query = new Query;
 $query->from('yii2_test_article_index')->match('development');
 $provider = new ActiveDataProvider([
-	'query' => $query,
-	'pagination' => [
-		'pageSize' => 10,
-	]
+    'query' => $query,
+    'pagination' => [
+        'pageSize' => 10,
+    ]
 ]);
 $models = $provider->getModels();
 ```
@ -99,10 +99,10 @@ use yii\data\ActiveDataProvider;
 use app\models\Article;

 $provider = new ActiveDataProvider([
-	'query' => Article::find(),
-	'pagination' => [
-		'pageSize' => 10,
-	]
+    'query' => Article::find(),
+    'pagination' => [
+        'pageSize' => 10,
+    ]
 ]);
 $models = $provider->getModels();
 ```
--- a/extensions/swiftmailer/README.md
+++ b/extensions/swiftmailer/README.md
@ -7,12 +7,12 @@ To use this extension,  simply add the following code in your application config

 ```php
 return [
-	//....
-	'components' => [
-		'mail' => [
-			'class' => 'yii\swiftmailer\Mailer',
-		],
-	],
+    //....
+    'components' => [
+        'mail' => [
+            'class' => 'yii\swiftmailer\Mailer',
+        ],
+    ],
 ];
 ```

--- a/framework/views/errorHandler/exception.php
+++ b/framework/views/errorHandler/exception.php
@ -88,7 +88,7 @@ html,body{
    line-height: 1.25;
 }
 .header pre{
-	margin: 10px 0;
+    margin: 10px 0;
 }

 /* previous exceptions */
@ -134,8 +134,8 @@ html,body{
    color: #aaa;
 }
 .header .previous pre{
-	font-size: 14px;
-	margin: 10px 0;
+    font-size: 14px;
+    margin: 10px 0;
 }

 /* call stack */
@ -355,9 +355,9 @@ html,body{
        <?php endif; ?>
        <h2><?= nl2br($handler->htmlEncode($exception->getMessage())) ?></h2>

-	    <?php if ($exception instanceof \yii\db\Exception && !empty($exception->errorInfo)) {
-		    echo '<pre>Error Info: ' . print_r($exception->errorInfo, true) . '</pre>';
-	    } ?>
+        <?php if ($exception instanceof \yii\db\Exception && !empty($exception->errorInfo)) {
+            echo '<pre>Error Info: ' . print_r($exception->errorInfo, true) . '</pre>';
+        } ?>

        <?= $handler->renderPreviousExceptions($exception) ?>
    </div>