- "All Set" screen doesn't show after Home/Overview/Back tutorials.
- X button in top left is hidden (we'll want to move this to the
feedback view).
- Feedback pops in and out from the top of the screen.
- Hand animation is replaced by video feedback at start and after
incorrect gesture.
- Back tutorial goes left then right, in order to match video.
- Updated strings and marked translatable (UX-reviewed already).
- Added Chinese translations.
- Many other things.
Test: Manual
Change-Id: I126a3ea0dad645014fab9cdee2ed19e06a8a56e9
