Add "Turn WiFi off" action to "Open networks" notification

Forward ported to kitkat

Squashed:
add "Turn Wi-Fi off" action to the "open networks available"
notification
add missing xhdpi turn wifi off image
WiFi open network notification: fix potential crash

Change-Id: Id1fd4f50755c5172cdc557fc27e2298290edecef
Signed-off-by: Roman Birg <roman@cyngn.com>
(cherry picked from commit 00c115581583e7d00525e716bacc7b6886af10b0)
frameworks: Configurable up to user (LTE or 4G) - [1/2]

Credit Daxx for the original implementation

Change-Id: I80711a547851ec94c2391169ca9c2a1da877fac7

Conflicts:

	core/java/android/provider/Settings.java

(cherry picked from commit 3dd73d4c7abdf423fcc202c4d2bacfe10003013b)

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

(cherry picked from commit b85ba552ca1fc933b1248f47e8e35e51f0bb2636)