MCCS - new Multiplayer content

Isn't the Pest mod optional?
Anyway, that's great. It would be good to merge with NHF to create a single, powerful framework containing everything needed for the fifth game!

In EWA, Pest can be disabled by replacing the executable file with a launcher. In 5.5, it can be disabled through the game interface, but it seems impossible to do so by default. Just in case, let's have both versions.

It's possible to combine it with NHF, but some of the NHF code will need to be rewritten. If there's a need and permission from the NHF authors, it can be done without any problems (well, not entirely without problems:)).