Framework: Lock screen Calendar (Part 2 of 2)

This commit adds the framework side support for displaying the
next Calendar event on the lock screen.

Note: Calendar will not display on a Phone in landscape mode, there
is just not enough space for it.

Patch set 2  - Different attempt at layout for phone + NPE checking
Patch set 3  - NPE fix and centered layout (tablets)
Patch set 4  - New layouts and cleanup
Patch set 5  - Tablet portrait layout tweak
Patch set 6  - Whitespace cleanup
Patch set 7  - Query and display logic cleanup
Patch set 8  - Use Time.TIMEZONE_UTC
             - Remove duplicate cursor cleanup
Patch set 9  - Fix query logic to return proper event date

Change-Id: Ib3dd33d7224cff8345ec3868b9097584697601c5