Av unify views and responsive

Add responsive design to invoice and receipt views
Pivotal Tracker Storys
- https://www.pivotaltracker.com/story/show/65550994
- https://www.pivotaltracker.com/story/show/68727848
- https://www.pivotaltracker.com/story/show/68026378
Release:
- https://www.pivotaltracker.com/story/show/70377582