base: Bring back batterylight settings

[2/2] Add support for custom LED colors notification

Originally from dvtonder (CyanogenMod)

Conflicts:
	core/res/res/values/custom_arrays.xml
	core/res/res/values/symbols.xml
	services/java/com/android/server/BatteryService.java

Change-Id: Iab519a757220c444f166b8a05246c7ca71b897d8

Conflicts:
	core/java/android/provider/Settings.java
	services/java/com/android/server/NotificationManagerService.java

base: fixed merge derp

Change-Id: Ib92927fad0078a9c96f701fcfdc1362d7875b8d2

base: correct default enablement of battery light

Use default value from config

Change-Id: I50a0e78bf4528ee8991da41aa1fdcfaaa30b107d