Orphan form

Remaining tasks in PT story: https://www.pivotaltracker.com/story/show/76239618

- Orphan index and show views.
- Orphan Status model.
- Orphan edit form.
- Orphan views features.
I agree and I've realized this after I posted my comment. However, I think introducing request specs is out side of the scope of this PR.

If you guys agree, maybe we should create a new story to add all required request specs (not limited to Orphan)