Merge changes I040f8c30,Ifea61ce5,Idb0fc71f,Ia121ea81,I10921ebf, ... into udc-qpr-dev

* changes:
  [Status Bar][Wifi] Protect against invalid levels from WifiTrackerLib.
  [Status Bar][Wifi] Disable wifi scanning in TrackerLibRepo.
  [Status Bar][Wifi] Add carrier merged sub ID to TrackerLibRepo.
  [Status Bar] Wifi: Add support for hotspot device types to repo.
  [Status Bar] WifiTrackerLib: Use WifiEntry.title for SSID.
  [Status Bar] Implement wifi activity in WifiRepositoryViaTrackerLib.