Fix BatteryBar mistake.

accidentally added this while debugging and didn't remove.
Backport Animation Controls for ICS/JB

Recents Page Open/Close animations do not work on ICS.
Cleanup SettingActivity

1) Remove the check to write first key preference and replace with
proper way to change pref mode to MODE_WORLD_READABLE

2) Disable the option for Random Quick Settings Tile Color in addition
to the select random color.

3) Remove useless import + useless resetting of SecondsClock variables.