Fixed backgroundItems display on Security screens
Eliminated RegReadByUser and RegWriteByUser by extending RegRead and RegWrite.
Much cleaner and easier to develop again.
Fixed leftover debug code.
Updated text to be inline with new fast-user switching.
Small cleanups
Updated debug code
BUG FIX: Can get stuck in retry loop.  Back button now closes the PIN entry screen and returns.
Multi-user increased from 4 users profiles to 8 user profiles