account_invoice_date_due

Purpose

Allows authorized users to adjust invoice due dates even after posting while keeping accounting entries consistent.

Features

res.groups: Adds an "Allow to change due date" group that grants permission to modify invoice due dates after posting.
account.move: Enforces the dedicated group's permission when a posted invoice's due date is edited.
account.move: Propagates manual due date updates to the receivable and payable move lines of posted invoices.
account.move: Mirrors the payment term due date into an editable field so authorized users can adjust it when a payment term is set.
account.move form: Displays due date controls for authorized users according to payment term and posting status.