Polish: Show the "move-blocked" cursor for locations outside the map. Clamp move orders to the map bounds for these orders.

OpenRA.Mods.RA/AttackBase.cs

@@ -263,6 +263,9 @@ namespace OpenRA.Mods.RA
 
 			public bool CanTargetLocation(Actor self, int2 location, List<Actor> actorsAtLocation, bool forceAttack, bool forceMove, bool forceQueued, ref string cursor)
 			{
+				if (!self.World.Map.IsInMap(location))
+					return false;
+				
 				IsQueued = forceQueued;
 
 				cursor = isHeal ? "heal" : "attack";