Prices: allow editing raw product info (origin, labels)

[raphodn]

Story

Currently we only allow editing "price" fields of a given price.

Screenshot

[serpico]

I noticed also we couldn't change the discount / no discount state ( I tried to edit and tick the box but it didn't stick ).

[raphodn]

I noticed also we couldn't change the discount / no discount state ( I tried to edit and tick the box but it didn't stick ).

this should work. the only thing is that the UI doesn't update after a price change, so you need to refresh the page 😅

[raphodn]

First part done: the server now allows to edit these price fields ✅ (see openfoodfacts/open-prices#586)

[raphodn]

ok finally done ! @DamienMAYAUX @serpico @TTalex

there's still the ability to edit the "receipt_quantity" field that is missing (#1169)