Work on issue # 2778549: Idle FRF72 is awake 18 mins more than ERE27 in 13hr test

Modify UIModeManager to not get location updates every thirty minutes.
Instead it gets one once a day, and requests a new update when airplane
mode is turned off or the time zone changes.

Change-Id: I8044c27b5cd77709e4b872e2e8edd352f23e4af1