Add resful services using routes outlined by team

I decided to break convention for our restful service only. I felt that calling the service UsersSvc wasn't getting at the real point - User can be thought of more as a model than as a service.

var user = User.get({_id: 1}); feels much better than
var user = UserSvc.get({_id: 1});

All routes outlined in the Google doc have been added and tested using $httpBackend mocks