Standardised module loading system & fixed build system

Fixed broken build system in broken webpack version.
Also updates module system to standardise on ES6 import/exports,
Especially since babel has changed it's 'default' logic for the old
module system.

resources/assets/js/services/events.js

@@ -25,4 +25,4 @@ class Events {
     }
 }
 
-module.exports = Events;
+export default Events;