settings: systemwide immersive mode aka expanded desktop

Change-Id: I6776a67404f616501c93ceb8249160980f24979e

Conflicts:
	res/values/cr_arrays.xml
	res/values/slim_strings.xml

(cherry picked from commit 1027720c65de729191e02727469662c5fbc3c3cc)
Settings: Forward port Kill app longpress back

Based on http://review.cyanogenmod.org/#/c/27235
Original author: DaneshM

Change-Id: I6e8bfb4e7e4a35c321a01debf8fdb3a38120267b
(cherry picked from commit f4045ab246b91223ff63e3641de3225b5a8fc2b9)
One does not simply become a Developer

Original Change-Id: I64ab4d7ab9d8334275d2e4d493b716a8fc73ab4e

Change-Id: I5c04307d0d6fd6ccfb82b5e1b2414c4e34e2d25c
(cherry picked from commit 880122e9bd53254c06f9a445d54ea946f965f84b)
reorder settings for HALO