Fix for crash on slow networks if the user went to location picker and chose a new location while the city hub was still loading samples (and votes) for the old venues.
Fix for crash on slow networks if the user went to location picker and chose a new location while the city hub was still loading samples (and votes) for the old venues.

SandcastleApps/partyup,SandcastleApps/partyup,SandcastleApps/partyup