/**
  * Update settings from the edit form
  */
 public function update(Request $request)
 {
     if (Auth::user()->isAdmin()) {
         \App\Setting::set('homepage_presentation', $request->input('homepage_presentation'));
         return redirect()->action('DashboardController@index');
     } else {
         flash()->error(trans('messages.not_allowed'));
         return redirect()->action('DashboardController@index');
     }
 }