Show name of a post's editor if a post was edited

[gunchleoc]

Recently a user's post was accidentally edited by a moderator. So the idea came up to show the name of the editor: Instead

Edited: date

we should may show:

Edited by username: date

I think this is an act of transparency.

We may also want a 'editor comment' so the result would be:

Edited by username: editors comment

I think showing the date can be omitted.

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Imported from Launchpad using lp2gh.

• date created: 2019-03-08T06:55:09Z
• owner: gunchleoc
• the launchpad url was https://bugs.launchpad.net/bugs/1819110

[frankystone]

Because i had some trouble recently i think:

1. Date time is important
2. Ideally each post should have revisions, so that the former (original) post can be seen by forum admins. This way each edits can be traced. F.e.: If an admin removes parts of a post, each other admin can see what was changed.
3. Restrict times for editing a post. Say: a normal user has the ability to edit his own post only for 24 hrs. After 24 hrs a normal user shouldn't be able to edit his post anymore, but admins can.