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/egw_core.js

@@ -10,6 +10,7 @@
  * @version $Id$
  */
 
+ import "./egw.js";
 /**
  * This code setups the egw namespace and adds the "extend" function, which is
  * used by extension modules to inject their content into the egw object.