Contains the following major changes:
* Export connector, api, and webrtc mediastream objects as angular services.
* Export url formatter as a separate angular service.
* Move `authorizing` flag to a function on the root scope.
* Use directive to set the page title.
* Move buddy list visibility toggling into the buddy list directive.
* Room information is no longer exposed on the root scope.
* Use room.joined and room.left events instead of room.
* Treat rooms as an object identified by name, rather than a string id.
* Remove the following unused or semantically ambiguous events from the
connector: opened, helloed, closed
* Centralize all room state in an angular service.
* Move call to hello from connector to api.
Simon Eisenmann
Lance Cooper
Evan Theurer
Simon Eisenmann