Sponsorship functionality & UI

PT story https://www.pivotaltracker.com/story/show/78039462

- Add functionality to link sponsor & orphan (i.e. create sponsorship)
- Sponsored orphans shown on sponsor's page
- Sponsorships can be ended by clicking link next to orphan's name on sponsor page
- Establishing a sponsorship marks orphan as 'Sponsored'
- Only Active Unsponsored orphans displayed when creating new sponsorship link
- Only one sponsorship relationship can be established between a sponsor and orphan (enforced in db)

UI is not final as client has sent new specifications
That's right you can't issue a delete request natively. A form with a post request was what I had in mind. Issuing a get request without the required params for method will not work. But anything that follows the link will.
As I have already stated this may be irrational given all the reasons why this is unlikely but I feel its a bad practice and I'm not keen on the idea.