Fix settings panel refresh issue

We use updatePanelWithAnimation() to make old panel animated out
and new panel animated in. But if old panel is in background, we
don't need the animation out process. Use a flag mForceCreation
to check, if activity is onStop() means it is in background, we
don't need the animation.

Fixes: 140541182
Test: manual
Change-Id: I9a2f555dba5417a108ce35fac25a62cf7a8b1d8b