scrubber improvements
Two suggested improvements:
One: remove strip <a> tags w/o href (since we remove all other attributes it doesn't do anything).
NB: this currently removes the entire node, including its contents; I can change it to keep the contents, but that's more work.
Two: mark external links as such by appending the text the hostname; e.g. [external link]
<a href="https://example.com" rel="external nofollow noopener" target="_blank">link</a> [example.com]Edited by FC (Fay) Stegerman