Picking List: only the first item of an order is printed

[TurboPT]

Thanks, yes, I was wanting to get this feature committed by the weekend.

Though there was originally only two pick-related changes to the Z_ChangeStockCode, I noted a few missing fields for the insert/select, so I added the fields and moved a few fields to match the order as they appear in the table. (to ease cross-checking) I will have another small cleanup matter to this file, likely this weekend, but I kept the vast amount of changes as minimal as possible, keeping close to the feature.