Complete gesture nav sandbox for for UXR.

- Removed All set screens altogether.
- Added "x" button to feedback view. This button now launches a dialog that allows the user to skip the tutorial.
- Added a progress tracker to the feedback view.
- Created a launch option to launch the back, home, then overview gesture tutorials in order.
- Added a button in the feedback view to progress through the tutorial.
- Updated tutorial animations to AnimatedVectorDrawables (with green accents).

Bug: 148542211

Test: manual
Change-Id: Icf3ec424141069895f97da74cd4ae881ff898d3f