New theme

* create new layout
* create new projects page
* create new builds page
* create new job page
* create new user_repos page
* create new users page
* create new user profile page
* remove caching from serializers
* preload last_builds to project serializer
* preload same_name_projects to user repo serializer
* memoize User#default_company
* create new project settings page
* cleanup css and js