FB: Slimrecents card/text color [2/2]

Allows user to set custom colors for Slimrecents card
    header text and background.

PS: fixed expanded card (thumbnail) background
Change-Id: I896a4db4ce235dc53858381347379d5fd7f7e796
Observe double tap gesture setting changes

Change-Id: I51f0e909c1c62eb860297cbdf26cffdb92969a60

Conflicts:
	core/java/android/provider/Settings.java