REQ Bloodfest activation change

[mushis]

Today, to activate Bloodfest mode, the user has to write /votecoop. map changes to start, "coop" activated. now the user has to wait 10 seconds to change to a bloodfest-compatible map.

This is a pain. I would suggest another command to trigger it, and maybe automatically change to a common map that supports bloodfest (some from pak0.pak, if there isn't any, maybe add bloodfest to one of them?)

I don't know what is the change to add bloodfest compatibility to a map, but I also suggest printing a line with the supported maps when the mode is activated.

[blaps]

I think e1m7 would be the closest BF compatible map.

[qqshka]

Do an opposite, select a map and do /votecoop :\