First release first bug

In the first release, a small bug inadvertently made its way in. When players started the multiplayer lobby mode, they were greeted with the username 'DEBUG ACCOUNT.' This is an intentional function for debugging purposes that made it into the release candidate of the game. It does not have a significant impact on the game, but there is a chance that players may not be able to play against each other because they are playing on the same account under the hood.

With version 0.6.16, this issue should be fixed. I have also added more guard functions to prevent this debug function from being included in the release version (hopefully).