Also removes an observer that causes a "You modified 'disabled' twice in a single render" and executes the logic in the next run loop to prevent that error. That's not ideal but it's not time for a major refactoring of that part.
Ember Bootstrap has changed a lot since the very outdated pre 1.0 release
which was used here. Changes are mostly about using composable components
and closure actions.
Also replaces PhantomJS with Chrome in CI cause PhantomJS is also very
outdated and causing test failure not related to any real world issues.
Ember CLI has replaced PhantomJS with Chrome in v2.15.1, which is the
upfollowing minor release to the version currently used.
