[DEV] Enable editing invoice lines for vessel billings
[DEV][TASK 10422] cont_nr_editable is False if no product_id
[DEV][TASK 10422] Re-add product_id on invoice_line
[DEV] Define on_change for edit button
[IMP][TASK 10422] Compute if cont_nr editable on product model
[DEV] Enable modifying non cont_nr_editable lines
[FEEDBACK][TASK 10422] Disable line editing when invoice is confirmed
[FIX] Don't compute price if no partner_id or no product_id
[FIX][TASK 10422] Fix on_change and invoice line state
[MERGE][TASK 10422] TOS: Enable editing invoice lines details