base: Fix screen on stats after a boot

Prior to this change, the following sequence:

  * Turn the display off
  * Issue a reboot via adb
  * Unlock the device (after rebooting) before the screen turns off

results in the screen being on but the battery stats not reflecting
this fact.

In general, the mismatch occurs when either there is no serialized
battery stats state or when it is serialized in a state where the
screen is off.

Change-Id: I17374553fae6a08a1be8fdf445967509474177a9
Merge "base: Fix screen on stats after a boot" into cm-11.0
Merge branch "cm-11.0" into kylin
SystemUI: Fix SystemUI buid
Update ic_notify_button_bg.xml
SystemUI: update drawable file
Changed contextual notification panel headers

See images - http://i.imgur.com/PupEJ5p.jpg
Merge pull request #3 from KylinMod/kitkat

Merge branch "KylinMod" into mikylin