short phpdoc descriptions for Panel subclasses

framework/yii/debug/panels/ConfigPanel.php

@@ -12,6 +12,8 @@ use yii\debug\Panel;
 use yii\helpers\Html;
 
 /**
+ * Debugger panel that collects and displays application configuration and environment.
+ *
  * @author Qiang Xue <qiang.xue@gmail.com>
  * @since 2.0
  */

framework/yii/debug/panels/DbPanel.php

@@ -12,6 +12,8 @@ use yii\log\Logger;
 use yii\helpers\Html;
 
 /**
+ * Debugger panel that collects and displays database queries performed.
+ *
  * @author Qiang Xue <qiang.xue@gmail.com>
  * @since 2.0
  */

framework/yii/debug/panels/LogPanel.php

@@ -14,6 +14,8 @@ use yii\log\Logger;
 use yii\log\Target;
 
 /**
+ * Debugger panel that collects and displays logs.
+ *
  * @author Qiang Xue <qiang.xue@gmail.com>
  * @since 2.0
  */

framework/yii/debug/panels/ProfilingPanel.php

@@ -13,6 +13,8 @@ use yii\helpers\Html;
 use yii\log\Logger;
 
 /**
+ * Debugger panel that collects and displays performance profiling info.
+ *
  * @author Qiang Xue <qiang.xue@gmail.com>
  * @since 2.0
  */

framework/yii/debug/panels/RequestPanel.php

@@ -13,6 +13,8 @@ use yii\debug\Panel;
 use yii\helpers\Html;
 
 /**
+ * Debugger panel that collects and displays request data.
+ *
  * @author Qiang Xue <qiang.xue@gmail.com>
  * @since 2.0
  */