Soc2014 meta unittests

Contains:
- unit tests for current implementation of Options
- renamed to models_meta to avoid name clashes
This check would benefit for being a little stronger. As currently phrased, it's checking that every value of f.rel in local_fields is *either* a related.ManyToManyRel or None. This doesn't validate that the right field is returning the right result (e.g., a data field returning M2M for some reason).