Update to new EAK naming conventions
Combine bugIndex and bug controllers
Show loading message while navigating between bugs
Show error message when a bug fails to load
Add saving indicators
Show the first and last few comments by default.

Per Andreas' past request.
Show saving message during comment save
Oops, missed this earlier when renaming the bug controller
Require authentication to use the frontend for now
Workaround Ember bug causing outlet contents to not render when isLoading condition changes

https://github.com/emberjs/ember.js/issues/3187
Clear model when navigating to another bug
Fix bug creation redirect
Show saving message for bug edits
Show gravatar in comments
Only show obsolete filter link if there are attachments
Properly handle blocks/depends_on can_edit flag