VbzCart/ui/terms/restock/request

Line-items in a restock request are referred to as "items" rather than "lines" because each catalog item can only appear once.

Each item in a restock request tracks multiple quantities:

• need: quantity needed – what we should order (from the supplier)
  • cust: ...for open customer orders – quantity spoken for (by customer orders)
• ord: quantity ordered – what we ordered (from the supplier)
• exp: quantity expected – what we expect to actually receive (from the supplier)