minor css fix for ErrorHandler

conflicting css class and bad positioned icon

framework/yii/views/errorHandler/callStackItem.php

@@ -16,7 +16,7 @@ $context = $this->context;
 <li class="<?php if (!$context->isCoreFile($file) || $index === 1) echo 'application'; ?> call-stack-item">
 	<div class="element-wrap">
 		<div class="element">
-			<span class="number"><?php echo (int)$index; ?>.</span>
+			<span class="line-number"><?php echo (int)$index; ?>.</span>
 			<span class="text"><?php if ($file !== null) echo 'in ' . $context->htmlEncode($file); ?></span>
 			<?php if ($method !== null): ?>
 				<span class="call">

framework/yii/views/errorHandler/main.php

@@ -109,8 +109,8 @@ html,body{
 	filter: progid:DXImageTransform.Microsoft.BasicImage(mirror=1);
 	font-size: 26px;
 	position: absolute;
-	margin-top: -9px;
-	margin-left: -22px;
+	margin-top: -5px;
+	margin-left: -25px;
 	color: #e51717;
 	text-shadow: 0 1px 0 #cacaca;
 }
@@ -169,7 +169,7 @@ html,body{
 	color: #000;
 	text-shadow: 0 1px 0 #cacaca;
 }
-.call-stack ul li .number{
+.call-stack ul li .line-number{
 	width: 45px;
 	display: inline-block;
 }