Add detail of purchase orders to Workspace PO authorisation screen Merged

When a purchase order is raised we usually use 'free text item' and a description of the goods or service, as we don't have a lot of stock so don't use a stock list. When the authoriser comes to authorise via the Workspace Purchase Order Processing screen, it only shows the supplier and the amount. It would be really useful if the description of the PO was showing here, so they wouldn't need to see the paperwork as well.