Killing Floor Experimental Update

[markg]

I previously added the Testmap to the Experimental server, but it isnt getting used that much.

So i added a new feature we can try out; votable difficulty changes.

This one server is now set up to change difficulty via vote; beginner/normal/hard/suicide/hoe are all there, as well as the core maps and the training map. So now the server can be used to gain achievements on any level/difficulty.

let me know how it goes.