Remove comments from routes
Use devise-provided `authenticate` for sidekiq dashboard
Extract unconfirmed user factory into a trait
Split up locale files
Cleanup receipts management

* Leverage more of `inherited_resources`' hooks
* Use `PaginatingDecorator` instead of different methods for the
  decorated collection and collection for pagination.
Convert schema.rb syntax
Add backbone.js and update underscore.js
Remove ember
WIP on removing ember