public function deleteVatAction()
 {
     if ($this->request->isGet() && $this->request->isXmlHttpRequest()) {
         $pieces = explode("-", $this->request->getQuery()->id);
         $vat = $this->settingsService->getVatById($pieces[1]);
         if ($vat) {
             $this->settingsService->deleteVat($vat);
             return new JsonModel(array($pieces[1]));
         } else {
             return new JsonModel(array());
         }
     }
     return $this->response;
 }