Warsow server changes

[ObaniGemini]

I got a few changes to propose for warsow's server. I can work on them but need an approval first.

change sv_pps from 20 to 33 in config. It's been tested those times and makes the experience a lot better when playing

change server's gametype to gladiator (a gametype which can be found here ), and unable a few votes in cfg (I'll make a PR for all the elements if this is accepted).
This mode has been there for a long time but the only host for it stopped hosting it at some point, and it is (to me) one of the funniest and most original modes of the game. I think we could change our classic votable server to that gametype because there are already a few ones while this could make ours unique for now.

@Darcidride are you for some of those changes ?