Make use of the new web API optimizations in Djblets.
Review Request #4827 — Created Oct. 21, 2013 and submitted
Make use of the new web API optimizations in Djblets.
This helps the new optimizations for the Djblets web API code. It calls
the new _get_queryset, and makes use of the new id_field in get_object.
Unit tests pass.
Tested with a variety of resources, and saw improvements across the board.
