AOKP custom system animations (1/2)

Ported from here: http://gerrit.aokp.co/#/c/12304/

Thanks to Steve Spear

PS2: Clean tabs

Change-Id: I190044f3fdb166beb8a620bc4b5f91784d6398b8

Conflicts:
	core/java/android/provider/Settings.java
	core/res/res/values/cm_strings.xml