gameServer: Add user warning if got chat command not suitable for current state (lobby/room); fix protocol errors
Backed out
changeset 6e4e745f42bb. Devs are hating it for ... reasons
Change syntax for Format/FormatA, remove array in function to be friendlier to Pas2C
This fixes a problem with Pas2C, but the price to pay is uglier code. :(
gameServer: Remove broken and undocumented /part chat command
If a player used it, a lot of protocol errors start to happen.