systemui: Forward-port notification counters

 * Port from CM11

Change-Id: Id9d0954acffd00bdb470b9eccbdb3b45fbd995c1

Conflicts:
	packages/SettingsProvider/res/values/defaults.xml
	packages/SettingsProvider/src/com/android/providers/settings/DatabaseHelper.java

Conflicts:
	core/java/android/provider/Settings.java
	packages/SettingsProvider/res/values/defaults.xml
	packages/SettingsProvider/src/com/android/providers/settings/DatabaseHelper.java
Revert "status bar: native battery percentage"

This reverts commit 50336eba118a8dbe104a1ee4e543500f43877c35.

Conflicts:
	core/java/android/provider/Settings.java
SystemUI : Make battery percentage configurable

Change-Id: Ibfc0cf9c5a4efc13ecd3c3e99723bb2b717c50a7