[CRUD] check that action exists before inserting them in edit and view template

CRUD/Resolver/Resolver.php

@@ -93,4 +93,10 @@ class Resolver
             '_'.
             $action);
     }
+    
+    public function hasAction($crudName, $action)
+    {
+        return \array_key_exists($action, 
+            $this->crudConfig[$crudName]['actions']);
+    }
 }