Added option to hide player from /list /who ... login message.

This is for other plugins, that want to hide a player.
Use IEssentials.getUser(Player p).setHidden(boolean)

Essentials/src/com/earth2me/essentials/commands/Commandpay.java

@@ -25,6 +25,10 @@ public class Commandpay extends EssentialsCommand
 		for (Player p : server.matchPlayer(args[0]))
 		{
 			User u = ess.getUser(p);
+			if (u.isHidden())
+			{
+				continue;
+			}
 			user.payUser(u, amount);
 		}
 	}