IcingaHost/ServiceForm: use new button helper

application/forms/IcingaHostForm.php

@@ -61,6 +61,7 @@ class IcingaHostForm extends DirectorObjectForm
         } else {
             $this->getElement('imports')->setRequired();
         }
+        $this->setButtons();
 
         // $this->addZoneElement();
     }

application/forms/IcingaServiceForm.php

@@ -26,5 +26,7 @@ class IcingaServiceForm extends DirectorObjectForm
         if ($this->isTemplate()) {
             $this->addCheckExecutionElements();
         }
+
+        $this->setButtons();
     }
 }