Create and save invoice details

Purpose: To allow users to create invoices in folio

This relates to summary invoice details only, NOT the invoice line details.

Scenarios:

1 Scenario

• Given the invoices app can be found in the system menu
• When the app is selected
• Then the user should see a "New" button in the header of the second pane
  See screenshot

2 Scenario

• Given the "New" button is visible in the Invoice UI
• When I click the "New" button
• Then I should be presented with the create invoice form

3 Scenario

• Given I can access the create invoice form
• When I arrive at the create invoice form
• Then I should see input fields for the invoice details
  
  See spreadsheet for more field detail: https://docs.google.com/spreadsheets/d/1F88PoSnEKD7oFnza1ZuOgzAgKnK95XOyTQzxyww3tZA/edit#gid=131223376

4 Scenario

• Given I can access the create invoice form
• And there is a Create Invoice button in the top righthand corner
• When I have populated fields with information
• And all required fields are valid
• Then I can click the Create Invoice button to dismiss the form
• And the invoice I created will display in the result list of the three-pane layout

• Notes
  • Allow vendor to be filled in by typing vendor code (as well as lookup)
  • Vendor Invoice Number is more important than FOLIO Invoice Number
  • Unlike PO number, FOLIO invoice number does not need to be editable by user see MODINVOICE-24