Upgrade ember-cli
Fix mistakes in controller definitions

This is only a temporary fix. These routes and controllers are misnamed.
Apparently the newest version of Ember catches these errors which is
pretty nice.

The chapters controller should probably be a ‘sections’ controller. Then
it could be an array controller.
Disable live-reload for now

Waiting on a fix that would allow live-reload use with a path prefix:
https://github.com/rwjblue/ember-cli-inject-live-reload/pull/14
Merge branch 'cli-upgrade'