prevent loading error for ace language tools extension in development

services/web/app/views/project/editor.jade

@@ -99,6 +99,9 @@ block content
 				},
 				"ace/ext-searchbox": {
 					deps: ["ace/ace"]
+				},
+				"ace/ext-language_tools": {
+					deps: ["ace/ace"]
 				}
 			},
 			config:{