Added support to disable a debug panel.

extensions/debug/Module.php

@@ -38,7 +38,9 @@ class Module extends \yii\base\Module
  */
  public $logTarget;
  /**
- * @var array|Panel[]
+ * @var array list of debug panels. The array keys are the panel IDs, and values are the corresponding
+ * panel class names or configuration arrays. This will be merged with [[corePanels()]].
+ * You may set a panel to be false to disable a core panel.
  */
  public $panels = [];
  /**
@@ -64,7 +66,7 @@ public function init()
  Yii::$app->getView()->on(View::EVENT_END_BODY, [$this, 'renderToolbar']);
  });
 
- $this->panels = ArrayHelper::merge($this->corePanels(), $this->panels);
+ $this->panels = array_filter(ArrayHelper::merge($this->corePanels(), $this->panels));
  foreach ($this->panels as $id => $config) {
  $config['module'] = $this;
  $config['id'] = $id;