Approval in backend

backend/nl/basis.json

@@ -385,6 +385,7 @@
         "to_link": "Link",
         "to_unlink": "Unlink",
         "edit_all_search_results": "Edit all results of the search query",
-        "not_available": "Not available"
+        "not_available": "Not available",
+        "success": "Success"
     }
 }