Mirror Mode and Fixes

- Fixed left and right not working in the menu.
 - Added mirror mode in visual settings, once YOLO difficulty is unlocked.
 - Modified "Hazardous Material Mover" level layout to be shorter, and less brutal.

 - Modified check for updates to only be triggered during the title screen.

 - Fixed oddity where error messages were not loading text properly.
 - Added system to keep trying to collect leaderboard data if it fails.
- Added system to prevent leaderboards from being clicked un, unless they're loaded.

 - Added method to check for updates.
- Added title screen item to update the game.