Frameworks: speed up statubar/notification drawer

a lot user complain about slow statusbar pull down introduced
with jb 4.2....this speed it up

thanks to IceColdJelly

Change-Id: Iae108f5680b25ea995168a505a30e06bef0185d3
Add turn off action to WiFi Tether notification

PS 2+3 : Fixed Icon + Add persistence to WiFi state [mnazim]

Change-Id: I320405ed7e90e4c06ecdb127cd4c1cad6bedbcdd
Signed-off-by: Gergely Szell (sethyx) <szell@hu.ibm.com>