/**
  * upload new gallery image to the database
  * @param Request $request
  * @return Response
  */
 public function uploadImageToGallery(Request $request)
 {
     if (GalleryContent::saveContentImage($request, 'img_pre', 'imageTitle', 'client/img/img-gallery')) {
         Notify::success('Image uploaded successfully');
     } else {
         Notify::error('Image is already existing in server');
     }
     return redirect()->action('AdminDashboardController@showImageGallery');
 }