[quotation] validy/Expiry Date

- Task: https://www.odoo.com/web/#id=9362&view_type=form&model=project.task&action=333&active_id=131
- Pad: https://pad.odoo.com/p/r.WMJGiGvsWBjI6lHO
Why setting it as invisible ? I think the purpose is to have an automatic computation based on the template, but to allow the user to change it anyway. If you set it as invisible the user won't be able to change it when not using a template.