[DONE] Display only as many player slots as the current map supports

[tomreyn]

In the 'custom game' screen, if a map only supports two players, it makes no sense to display 8 lines for each possible player slot. Please only display as many player slots as the currently selected map supports. I believe ths would make for a nicer interface.

If this cannot be done, please consider either greying out this player slot or at the very minimum greying out the < and > selection buttons in the inactive player slots.

[softcoder]

This has now been added to SVN. Now both server and client screens will only show the # of rows applicable to the selected map. Also the client menu now also shows map info.