Polish gamemode stuff

[toberge]

Also, some things I think would be good here to explain the game modes better in game:

• For the first to 20 chips: In the scoreboards when the chip amount for a player is 20/20 we should have a text field with "CAN WIN" or similar on the player who can win's scoreboard beneath the x/20 chips
• For the six rounds: Maybe add a text on the scoreboards with "CURRENT LEADER" on the person with the most kills beneath the kill amount

Another thing I think would be good to explain the gamemodes is to have a tip box when "hovering" over one of the three modes as poorly illustrated here:

[toberge]

Done, actually.