PackageManager: allow build-time disabling of components

Allow components to be specified as disabled at build time
(applied on boot).

This allows stock OTA components to be marked as disabled in
CM builds.

Change-Id: I6e4499cc40a779792a5ea97a10137399dad7d69f
SystemUI: Fix translatable [translation]

Change-Id: I407e9ea2525ec8ba8570cb4edbd190f4076df4e5
Use scaled font size for no recent apps text

Change-Id: Ib200928db09bcdd6661de5e450e2fc9c1b5566cf