Option to filter the admin timeline to show only takedown events - creating a takedown log for admins

[RichardTaylor]

The admin timeline at

admin/timeline

already has filters for "Authority changes" and "Request events".

This is a proposal for a new filter for takedown events, events which reduce the prominence of material on the site, including prominence of threads, messages or attachments to requester_only, hidden or backpage, and re-embargoing of material

We could also include user close and anonymise events, and the addition of censor rules.

This would be a precursor to a public takedown log

but would also be useful in its own right for oversight of the operation of a service.

One could envisage further filtering to remove not_foi, vexatious, and spam cases as well as statistics