The Final Solution of the Polish Question

As all active players noticed recent influx of poles resulted in chat being 99% polish. Most of poles refused to use english to communicate with each other in game, to have their polish conversations on their own irc channel and to use TS. Kicks and bans will only result in loss of our new player. Plugin allowing chat groups or multiple chat rooms seems to be the best solution. It's not difficult to install and we need it to keep our server playable. It'd be also useful for other large groups of foreigners building together like other slavs and finns.