So I was under the impression that it was not desired to bootstrap the page template with variables.  Rather everything should be done via API calls, so there's only ever one way to do things.

Personally I think bootstrapping the page with information is fine and a common and good practice.  Continuing along that vein if we do that we should just move [csrf](https://github.com/jgable/Ghost/blob/emberSignin/core/server/views/default-ember.hbs#L7) value into a variable as well.