added option to make bootstrap navbar 100% with

fixes #1474

extensions/yii/bootstrap/NavBar.php

@@ -50,8 +50,15 @@ class NavBar extends Widget
 	 * @var array the HTML attributes of the brand link.
 	 */
 	public $brandOptions = [];
-
+	/**
+	 * @var string text to show for screen readers for the button to toggle the navbar.
+	 */
 	public $screenReaderToggleText = 'Toggle navigation';
+	/**
+	 * @var bool whether the navbar content should be included in a `container` div which adds left and right padding.
+	 * Set this to false for a 100% width navbar.
+	 */
+	public $padded = true;
 
 	/**
 	 * Initializes the widget.
@@ -67,7 +74,9 @@ class NavBar extends Widget
 		}
 
 		echo Html::beginTag('nav', $this->options);
+		if ($this->padded) {
 			echo Html::beginTag('div', ['class' => 'container']);
+		}
 
 		echo Html::beginTag('div', ['class' => 'navbar-header']);
 		echo $this->renderToggleButton();
@@ -86,7 +95,9 @@ class NavBar extends Widget
 	{
 
 		echo Html::endTag('div');
+		if ($this->padded) {
 			echo Html::endTag('div');
+		}
 		echo Html::endTag('nav');
 		BootstrapPluginAsset::register($this->getView());
 	}