This module adds the possibility for users to force the invoice status
of the sales orders to 'Invoiced', even when not all the quantities
ordered or delivered have been invoiced.

This feature useful in the following scenario:

- The customer disputes the quantities to be invoiced for, after the
  products have been delivered to her/him, and you agree to reduce the
  quantity to invoice (without sending a refund).
- When migrating from a previous Odoo version, in some cases there is
  less quantity invoiced to what was delivered, and you don't want these
  old sales orders to appear in your 'To Invoice' list.
