Need Invoice and shipment improvements

[kmk]

So tricky now using the invoice and shipment system, please add the improvements as soon as possible.

1. Add Prev and Next buttons to Invoice View page, Shipment View page

2. In the Shipment page, the Invoice column missing invoice numbers that is let me know by first view who is who.

3. In the Shipment page, missing Ship button that let me make the shipment item as Shipped.

4. Please add Shipment number and shipment method name in the print invoice, if the invoice generated and shipment order, it should be appear in the invoice paper too.