#463 - In Progress - Login UI working + shim

So far so good, I still need to hook up the actual on login/ on logout functionality to the correct states.

I may need to rethink the logic since the new login uses a slightly different event model
the problem is that login now starts the verify xhr as soon as `WebmakerLogin` it is instantiated, and I need to be able to control when that happens (i.e. when the dom is ready)