add "save and stay" button in garancia vap

modules/garanciavap/controllers/admin/AdminGaranciaVap.php

@@ -14,7 +14,6 @@ class AdminGaranciaVapController extends AdminController
 		$this->className = 'GaranciaVapModel';
 		$this->lang = true;
 		$this->context = Context::getContext(); 
-
 		parent::__construct();
 	}
 
@@ -40,6 +39,12 @@ class AdminGaranciaVapController extends AdminController
 		if (!$obj = $this->loadObject(TRUE)) {
 			return;
 		}
+    
+        $this->toolbar_btn['save-and-stay'] = array(
+            'short' => 'SaveAndStay',
+            'href' => '#',
+            'desc' => $this->l('Save and stay'),
+        );
 
 		$this->fields_form = array(
 			'multilang'=> true,