Cancel Production Orders and Construction

Sometimes I realize that maybe building 50 spearman was a bad. Sometimes things change.

Right now, there is, as far as I can tell, no way to cancel orders. I think it would be greatly appreciated - Even if we don't get a full resource refund (or hell, no resource refund, though I don't think thats a good idea) it is something I think we should be able to do.

I think it's a good idea, I've thinking in it since began to play, sometimes I've made a wrong click (this happens when you are awake until late playing) or have changed my mind about the construction.