Also fixed an issue w.r.t the plugin architecture. Previously infinite recursion would happen when more than one plugin was overriding a method. Resolved now by using a wrapper function that lazily sets the correct super method.
Instead of using the deps-*.js files. Builds will currently break, they still need to be reworked. Also moved the refreshWebkit method to utils.
Plugins are now also updated so that they can get the closured converse object directly and don't need to rely on _super.