port upgrade webpack to v2.2 to EE
Squashed commit of the following:
approve new dependencies
update karma deps to work with webpack 2
upgrade to webpack 2.2.x
Do not update/delete: Banner broadcast message test data
Do not update/delete: Notification broadcast message test data
Squashed commit of the following:
approve new dependencies
update karma deps to work with webpack 2
upgrade to webpack 2.2.x