Removed outdated comment from player.cpp
Revised MsgFunc_CurAmmo to evaluate flags only if message had a valid weapon
Changed AvHPlayer.cpp permissions to allow switching teams before a round starts and disallow joining active teams that aren't used by the map.
git-svn-id: https://unknownworlds.svn.cloudforge.com/ns1@33 67975925-1194-0748-b3d5-c16f83f1a3a1