Revert "Revert "[1/2] Add support for custom LED colors notification""

This reverts commit 7b671e8baf29ee42ca6b60b479bdfbaf66fb51b3.

Conflicts:
	proguard.flags
	res/layout/dialog_light_settings.xml
	res/values/euc_arrays.xml
	res/values/euc_strings.xml
	res/xml/battery_light_settings.xml
	res/xml/display_settings.xml
	res/xml/notification_light_settings.xml
	src/com/android/settings/DisplaySettings.java