Initial base for live folders

Change-Id: I76b8065b88e4a51d33e802fc8b80911f703f025a
Trebuchet : Live folder fixes

- Alert live folder receivers, only once
- Check uid of package as a backup, incase its using sharedUid

Change-Id: If09b44aee73d68f73adcf33a71ba47cb8f70bc23