The results of Guy Bedford's help

Egroupware will load into addressbook & show rows
Most base files should be bundled server-side & included
rollup.config.js controls the process

Still needs work:
- consider /dist directory for best-practice
- cleanup
- other built-in apps
- EPL / external apps need Guy's multi-stage work

api/js/jsapi/app_base.js

@@ -12,13 +12,12 @@
 	egw_inheritance;
 	/api/js/es6-promise.min.js;
 */
+import {EgwApp} from "./egw_app";
 import './egw_inheritance.js';
 import {et2_createWidget} from "../etemplate/et2_core_widget";
-import {etemplate2} from "../etemplate/etemplate2";
 import {et2_dialog} from "../etemplate/et2_widget_dialog";
 import {et2_nextmatch} from "../etemplate/et2_extension_nextmatch";
 import {et2_favorites} from "../etemplate/et2_widget_favorites";
-import {EgwApp} from "./egw_app";
 
 /**
  * Common base class for application javascript
@@ -2061,4 +2060,4 @@ export const AppJS = (function(){ "use strict"; return Class.extend(
 		});
 	}
 
-});}).call(this);
+});}).call(window);