AOKP custom system animations (2/2)

ported fom here: http://gerrit.aokp.co/#/c/12305/

Thanks to Steve Spear

Change-Id: Ic692025b0db02dd01684b4e9f91d63a04f80181f

Conflicts:
	AndroidManifest.xml
	res/layout/slider_preference.xml
	res/xml/system_ui_settings.xml