Reworked transparent layer
When a halo'ed window is opened, the transparent layer will be always visible. It will manage the background dim.
This fixes some apps dimming its sandboxed processes (like chrome).

LayerActivity manages its own lifecycle. When it's focused after paused it finishes itself.

System processes (identified by "android" pkg in SystemUI and system uid in Activity) don't use the layer and still use their own background. This
has been kept this way to not interfere with their activity.
NotificationManagerService: fix typo on led off time variable
Fixing crash in PhoneNumberUtils getNumberFromIntent

Handling intent with no data when trying to retrieve number from
intent.
Merge branch 'jellybean' of https://github.com/ParanoidAndroid/android_frameworks_base into jellybean
Update README.md
Check themes of current user, not user 0.
TEMPORARY: Reintroduce button-backlight (and respective inactivity timeout)

The power manager rewrite from Change I1d7a52e98f0449f76d70bf421f6a7f245957d1d7
completely removed support for control of the button backlights, which makes
all capacitive buttons out there stay dark. The commit message in that change
mentions it hasn't been implemented _yet_, so this fix should be temporary
until upstream does their own implementation

Change-Id: I6094c446e0b8c23f57d30652a3cbd35dee5e821a
Merge branch 'jellybean' of github.com:ParanoidAndroid/android_frameworks_base into jellybean-legacy