Add option to disable searchbar in recents [2/2]

Coded by yashade2001 <yashade2001@gmail.com>
Thanks to TheMrcool212 for his help.
Cherry-picked from Project D.I.S.C.O.

NEEDS THIS PATCH: https://github.com/CyanogenMod/android_frameworks_base/commit/d7a236b5485fc09c4c1d44deaeae214bd705f8a2

Signed-off-by: Yashar Ahmedizadeh <yashade2001@gmail.com>

Conflicts:
	core/java/android/provider/Settings.java
	packages/SystemUI/src/com/android/systemui/recents/RecentsActivity.java

Change-Id: I3a9bbb12d55f314d9e7dce82b8d50555c7e18337