Purchase Order Lines: Update cost information accordion to include additional costs and discount fields

Purpose: Users need to ability to encumber costs for a POL that are in addition to the List Unit Price

Note: This task estimate should include the removal of "Adjustment" fields and accordion

Scenario 1:
Given the POL is being edited or created
And has a format of P/E Mix
When opening the cost accordion
Then the user should have List Unit Price (Validation: Can not be negative)
And List Unit Price Electronic (Validation: Can not be negative)
And Additional Cost (Validation: Can not be negative)
And Discount (Can this be Percent or amount?) (Validation: Can not be negative)
see screenshot

Scenario 2:
Given the vendor associated with this PO and POL has an agreement with a "Discount" value
When opening the cost accordion for the POL
Then Discount field should be repopulated with that amount
And the user can edit it if needed

Scenario 3:
Given the above mentioned cost fields for a POL are all populated with values
When calculating the Estimated Price
Then the system should use this formula (List Unit Price(s) x Quantities Ordered + Additional Cost - Discount = Estimated Price)