Fixed nasty synchronization bug when players leave during start of a game. Fixed netpacket error which occured occasionally during game start when only one player was left, the last player will be removed from the game now, but stay in the lobby. Added new stat to IRC bot.

src/net/socket_msg.h

@@ -91,6 +91,7 @@
 #define NTF_NET_REMOVED_ALREADY_RUNNING	204
 #define NTF_NET_REMOVED_KICKED			205
 #define NTF_NET_REMOVED_TIMEOUT			206
+#define NTF_NET_REMOVED_START_FAILED	207
 
 // Notifications - join failed
 #define NTF_NET_JOIN_GAME_FULL			210