Purpose: Some institutions do not allow acquisitions librarians to create purchase orders for multiple items.
- Add "Purchase Order" to settings for the orders module
- Add setting for "Maximum number of purchase order lines per purchase order"
- The default should be 999 (This corresponds to the max number of digits that can display in purchase order line number eg. PO#-###)
- This limit can not be less than 1 and must be a whole number