Hotfix 2.1 - All you need is Fix

- Fixed hands position when using Vive and Windows Mixed Reality (Yes, we supoort it)
- Change Vive and WMR input mapping to be more convenient - now you shoot with the trigger not pressing the thumbstick
- Added visual tips for Vive controllers
- Fix flies navigation when they sometime didn't want to move (who knows what they're up to)
- Fixed the updating of the Leaderboard
- Fixed the updating of the round count
- Fixed that the "round completed" voice sounded 3 times - now only one (she just wants to speak a lot - women)
- Optimized code in most cases