am 7269d9ac: Tweak the Gestures Overlay demo. This shortens the fade duration...

am 7269d9ac: Tweak the Gestures Overlay demo. This shortens the fade duration to make it more usable and also adds a longer pause before the fade. This change also introduce a new compile-time setting to decide whether or not the overlay should steal the events from the underlying ListView. It is now off by default, per discussion with hackbod. It feel a little bit better but it may vary from user to user so studies will be necessary.

Merge commit '7269d9ac'

* commit '7269d9ac':
  Tweak the Gestures Overlay demo. This shortens the fade duration to make it more usable and also adds a longer pause before the fade. This change also introduce a new compile-time setting to decide whether or not the overlay should steal the events from the underlying ListView. It is now off by default, per discussion with hackbod. It feel a little bit better but it may vary from user to user so studies will be necessary.