Support Forums: Add User Notes to the EDIT page

[Ipstenu]

Sometimes you're leaving a note while you block a user. It would be handy if the field for user notes was ALSO on the back end of the edit page, so you don't have to leave a note, then edit and save a second time.

[Clorith]

4192.patch​ separates out the note-saving logic so it can be reused, and implements a new field in the edit user section which allows you to include a user note when saving details (leaving the field blank will not add a note).

The field will also not be visible if you are editing your own user, for what I hope is obvious reasons.

[tellyworth]

#5474 was marked as a duplicate.

[dd32]

In 10594:

Support Forums: Display user notes (and allow them to be added from) the forum user edit screen.

See #4691.
Fixes #4192.

[dd32]

In 10595:

Support Forums: When automatically adding a "Forum role changed to.." user note, append it to the last note added if it's from the current user in the last 5 minutes.

This allows for a note added while blocking/unblocking a user to contain both the moderator note and the action performed.

See #4192.
Fixes #4691.