Orphan list

First two tasks of PT story https://www.pivotaltracker.com/story/show/76239760

- [x] Create Orphan List model
- [x] Create new and index views for orphan lists
- [ ] Write cucumber features for testing orphan list creation and file upload 
- [ ] Switch to S3 for file storage
This makes me uncomfortable for several reasons:
- additional call to database even though only a single call due to being in the show view
- law of demeter violation (would like to see a partner method such as #partner_status_active?)
- second point would make line much more readable `if partner.partner_status_active?`