Animate circle battery rotation back to 0 after unplugging

After unplugging continue the rotation animation until it's back at 0
instead of jumping to it directly.

Change-Id: Ifea8351d609c0dc4ec82bd459942a197243dd5f1
Merge "Animate circle battery rotation back to 0 after unplugging" into cm-11.0
Merge remote branch 'cm/cm-11.0' into cm-11.0