QuickSettings : Add BatterySaver Tile (1/2)

PS1: Minor changes

Signed-off-by: hany <hany.alsamman@gmail.com>
Fix On-The-Go Tile
Add missing line @d190cee00193

 Fix NPE on opening floating window from notification
 Thanks LorDClockaN
Merge branch 'android-4.4' of https://github.com/AOSB/android_frameworks_base into aosb-kk