Webpack refactor

- added JSX support (webpack + robofile
- added public.js bundle
- refactored webpack config for clarity
- added settings.jsx form example
- fixed acceptance test failing on login

assets/js/src/public.js

@@ -1,6 +1,8 @@
-jQuery(function($) {
+define('public', ['jquery'], function(jQuery) {
+  jQuery(function($) {
     // dom ready
     $(function() {
 
     });
-});
+  });
+});