public function showIndex()
 {
     $page = $this->node;
     $feedbacks = FeedbackForm::with('category')->active()->get();
     $themes = FeedbackTheme::active()->get();
     $helpers = FeedbackHelper::active()->get();
     $operatorCodes = explode(',', Settings::get('mobile_operators_codes'));
     return View::make('feedback.index', compact('page', 'feedbacks', 'themes', 'operatorCodes', 'helpers', 'categories'));
 }