[Feature Request] Reminder: Invoice draft date offset to sending date

Problem When you create an invoice it gets the creation date according to the day it is created. There are cases where invoice drafts are open for a longer period of time. After two weeks it is finished and ready to send. 14 days have passed and it's quite assumable the creation date should be the current date and not the creation date of the draft. Additional implication When you send an invoice with a date way back in time the reminder system gets nasty and sends out reminders; Technically correct, but UX wise a PIA. Solution Create an optional feature to enable an in-place notification: The draft date is X days offset to the current date. Close and send anyways? YES/NO (while the retention time is a variable to the admin panel) Solution for additional implication Make it possible to halt/pause/edit reminders for a particular invoice. The point is: in europe it's technically unlawful to change an invoice afterwards (What one could/would do in order t…