Quick Settings: Fix flip-to-settings animation
Quick pulldown sometimes flips when it should not

The new code simply checks to see that the Event was a pull down event and that the event started in the top status bar.
If this is the case, then the quick panel is swapped to (without flip)

Special Thanks to my daughter Jenny fo painstakingly reproducing this bug.
Fix the flipping animation sometimes being played when pulling the quick
settings with two fingers
Finally fix incorrect flipping to quick settings
AudioService: Don't adjust volume when vol-downing to vibrate or silent

Pressing vol-down to vibrate or silent would (previously) still adjust the
stream volume, setting the last audible volume to 0, which is not allowed
for voice-capable devices.  Thus, the last audible volume would reset to
default on reboot if on vibrate/silent or the lowest volume setting.

By not adjusting volume when vol-downing to vibrate or silent on
voice-capable devices, the last audible volume is always preserved across
reboot.