Add possibility to edit post after creation

It would be useful if a submitter could edit their posts, after creating them here on Ideas + Bugs.

For example to fix minor grammar or clarity issues or typos.

Fixing those minor things would make the message clearer and save time also for the reader (i.e., Pieter).

If you want to limit potential abuse, consider allowing editing only within 15 minutes after post creation, like WhatsApp does.