Fix 3330653: Update lockscreen layouts to match latest mocks [DO NOT MERGE]

This change list:

- simplifies the UI design to reduce the number of
on-screen items by combining Alarm status with the date line.

- updates many of the layout files to match closer to the
final design.

- Simplifies the logic for showing Status1 info. It's now
more predictable and robust.

- updates the layout for tablets

- contains a modified alpha to work well with different backgrounds
(Tested: white, gray, and dark backgrounds)

- updates the tablet icons to something closer to the final size.

Manual merge from Change-Id: Ifb349dfa778e9c91b0649c8d95229607be5af8e5

Change-Id: Ia2a9a2d285102d0208b3a7fcead58d6454d116ae