closes#5317
- Adds back button to steps 2 and 3
- Prevents user navigating from step 1 to step 3 unless blog has been created
- Prevents user navigating from step 2 to step 3 unless blog has been created
No Issue
- Switches to the newer style of dependency injection.
- Instead of injection Controllers via "needs," use
Ember.inject.controller().
- Get rid of initializers that were only injecting objects
into various factories. Converts these objects into Ember.Service
objects and declaratively inject them where needed via
Ember.inject.service(). The added benefit to this is that it's no
longer a mystery where these properties/methods come from and it's
straightforward to inject them where needed.
