Prevent further things from clients who dont handshake

- The player will only finish the handshake once they spawn their player, a normal client would always do this eventually.

- They cannot chat, even if they request world data but just not spawn their player.

- Other clients will not be notified of their join/leave in both cases (dont request WD or do but dont spawn)

- And most importantly, they do not show on the in game player list but still show on the server console /playing cmd.

TShockAPI/Utils.cs

@@ -183,7 +183,7 @@ namespace TShockAPI
 		/// <returns>The number of active players on the server.</returns>
 		public int GetActivePlayerCount()
 		{
-			return TShock.Players.Count(p => null != p && p.Active);
+			return TShock.Players.Count(p => null != p && p.Active && p.FinishedHandshake);
 		}
 
 		//Random should not be generated in a method