Add a function making it impossible to start without map

[Charlemagne]

With this I mean to addres the very annoying problem with people forgetting to download the map before the game start. A fairly simple solution to this would be to make it impossible to click ready unless you have the map installed, thusly making it so you won't have to rehost because people get a little forgetful sometimes.

[SinbadEV]

only issue would be that if the map was changed after people going ready... would you suggest that they be made unready if the new map wasn't available? The one suggestion I really liked was that the host be able to see if the people had the map and have to click the "force start" to start if not everyone has it.

[Charlemagne]

That works just as well, just as long as we get a function that can stop you from starting if all players don't have the map, I'm happy.

[Aun]

I saw something in the mailing list about this, so i think it's implemented in the next lobby version.