Refactored: LBFSConnectionHandler is now LBFSCompactListRetriever
This is to pursue a change in architecture.
ListRetriever will be used to get the default list from the surrounding area, as determined by CoreLocation.
(CoreLocationHandler will remain unchanged, more or less.)
DataHandler will use ListRetriever response to pull venue IDs.
DataHandler will use venueIDs to get venueInfo via CompleteObjectRetriever;
All local data will be handled from CompleteObjecteRetriever response.