jordi fita mas e93a798223 Accept “invalid” quantity, price, and discount on invoice update
This is for “free products”, where the user adds an invoice row, does
not select a product from the search, and clicks the update button.
Numerus should select “appropriate” values for those that are left
unspecified.

I also no longer require the product_id to be an integer; if it is
empty, then it is assumed to be a “free product”.
2023-04-24 20:40:10 +02:00
..
2023-01-17 10:40:22 +01:00
2023-01-22 20:37:34 +01:00