-Block too-frequent HTTP requests (currently < 30 secs) unless forced
-Block overlapping HTTP requests
-Switch to significant change location svcs if bikingStateActive in
applicationWillTerminate:
-Fixed bug in new Address method
setNameAndCoordinateWithPlacemark:distanceFromUser: which was setting a
readonly property
-deleted unused NSNotificationCenter observers & keys
-small style fixes, refactors