* FIX: ember-cli proxy subfolder fix
* REFACTOR: put rootURL setup in environment, update baseURL logic for subfolder
Correctly have ember understand and parse relative_url_root and use it in
the dev server
* DEV: Use Ember CLI middleware to decorate the index template
Previously we'd do this on the client side which did not support our
full plugin API. Now requests for the index template will contact the
dev server for a bootstrap.json and apply it to the current template.
* FIX: Allows logins in development mode for Ember CLI