unreservation now can reserved

This script playing with "sv_allow_lobby_connect_only". when set "1" and
player connect directly, player will prompt a screen "Creating Game",
mean server will listed on Matchmaking.

this script capable to check when no player even no connecting player,
it set to "1", when slot full, lobby removed and set to "0" and accept
more player.
Merge pull request #7 from Anime4000/master

unreservation now can reserved