S2s sponsor rolodex

This may not be the final revision of what we want for a rolodex or sponsor service.  Considering the "contracts" don't have references to other BOs these might be revised in the future.  This does have what we need for s2s, however.

Rolodex, Unit, Organization, and Sponsor are all kind of woven together such that the object relationships are a little complex.  For our api I'm trying to simplify things a tad and avoid cycles in the object graphs.