Team based challenges are now handled differently from the normal ones.
When the game or challenge starts, instead of spawning all players
with the default team spawn method, they are teleported according
to their team. For example, if a player is on the blue team, he
will be teleported on the blue side of the map. Moreover, teams
are now generated properly, by diving the total number of players by
two. One drawback, that will be fixed in a next commit, is that team
challenges require an even amount of players.
ccebeb75f1