Hello!
Another round of bug fixes and small improvements.

Changelog
UI
Added controls legend in online scene
Content
Opening a game from an invite won't send the player straight to the match. A popup is shown instead
BugFix
Scoring isn't working when the host loses (color mismatch and bad de-serialization algorithm)
Lost input focus in the main screen right after the scene is loaded
Input flow issues in online scene
Invites with game closed break the match
Netcode
Arena selection framework (arenas not available yet)
Future Changes
Arena selection in online mode