This should work fine. Since `session:close` events are emitted after `App.init` is called, this event callback can be moved outside of the `.then` and above the `self.im.contacts.for_user()` line, since we will have `self.contact` by the time `session:close` is emitted. Maybe the placement would seem better if we did that, and put the dial back stuff in their own functions. Something like: https://gist.github.com/justinvdm/9509009

@retrorabbitFS thoughts?