Fix bot module plumbing

Fixes the issues pointed out after the original harvester module was merged.
Also merges the update rules as discussed on IRC.

OpenRA.Game/Traits/TraitsInterfaces.cs

@@ -365,6 +365,7 @@ namespace OpenRA.Traits
 	public interface IBot
 	{
 		void Activate(Player p);
+		void QueueOrder(Order order);
 		IBotInfo Info { get; }
 	}