Make it so Admins can remove lists by spammers

[ckjpn]

Make it so Admins can delete empty lists by spammers, since often the list name itself is spam.

Perhaps this is not a priority to do, but it might help let people know that admins monitor incoming spam and take care of it, and help keep things clean and neat.

Notes

• Even when the spam sentences have been deleted, the list remains.
• If a list contains no items, there should be no problem with deleting it.
• If you are worried that an Admin might accidentally delete a "good" list, perhaps the lists could be "unlisted" or set to the current "private" setting. Maybe the "private" setting means that it's not even included in the exported data. I'm not sure.

Example Screenshot