Gestures nav: Make it cancelable

* Referenced from commit "Implement edge long swipe gesture to new back gesture affordance"
* Remove long back swipe timeout setting
* Execute long swipe action when movement changed from down to up
* Cancel when x pointer smaller than threshold
* Use double click effect instead of heavy click

Change-Id: Icab2864703d518f4fa78a438d0e225a094fa1308
Signed-off-by: someone5678 <someone5678@users.noreply.github.com>