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
so if they wanted to look up a particular uploaded list, how would they do that? It seems to me the points above are in conflict with each other.
If they refer to them they will need to be indexed.
if the don't refer to them why do we have an osra_num?