Battle list ordering

[DeinFreund]

Luckily the game seems to be becoming more popular. This brings up room ordering again (although I couldn't find the previous issues). I'd suggest ordering rooms by

1. Non-passworded rooms first
2. Non-full rooms first
3. Amount of players descending

[Fealthas]

Bring back filters!

[GoogleFrog]

I think filtering is a sufficient fix.

[Licho1]

Imo sorting is still needed.

[GoogleFrog]

I also fixed sorting.