Start stubbing out the RelatedSetField
Implement the RelatedSetField in all its glory
Make sure that setting a related name to + works
Don't perform projections if one of the fields is a list field - you end up with multiple results!
Fix a bug that would prevent Groups being displayed in the admin
Make RelatedSetFields display in the admin correctly
Kill the old FK support in ListField/SetField
Merge pull request #104 from potatolondon/implement-instancesetfield

Implement RelatedSetField