Fixed issues with rev tree lookups.

Several commands were incorrectly searching the object database
for rev trees, rather than the index.  This issue was masked by
the caching object database, which was returning cached trees that
were added to the index when a search was done on the object database.
Separate each interceptor bound in GeogitModule to a separate method
Missing fixes on revtree lookups after merging volaya's patch-conflict branch