Printed quotations, sales orders, and invoices now use a more consistent layout, with aligned columns and standardized ordering. Invoices also show due dates, while payment terms and fiscal position notes are included so customers receive clearer documents.

Task: https://www.odoo.com/web?#id=9673&view_type=form&model=project.task&menu_id=3942&action=327
pad: https://pad.odoo.com/p/r.uZR4KBo9GF8Itvkw

This change prevents website email messages with no body text from causing an error. It improves reliability for users interacting with website messaging by handling empty content gracefully.