/**
  * Checks if the provided user is authorized for the request
  * @param array $user The user to check the authorization of. If empty the
  *  user in the session will be used
  * @return bool `true` if the user is authorized, otherwise `false`
  * @uses MeCms\Controller\AppController::isAuthorized()
  * @uses MeCms\Controller\Component\AuthComponent::isGroup()
  */
 public function isAuthorized($user = null)
 {
     //Only admins can delete videos categories
     if ($this->request->isDelete()) {
         return $this->Auth->isGroup('admin');
     }
     //Admins and managers can access other actions
     return parent::isAuthorized($user);
 }