damus.io on Nostr: switch to DOMPurify instead of our janky sanitize code (William Casarin) web: only ...

switch to DOMPurify instead of our janky sanitize code (William Casarin)
web: only redraw profile pic once or on force (Thomas Mathews)

pushed to refs/heads/master
http://git.jb55.com/damus.io/commit/ab12ebd7c9de940a1cca4aafe358ae0f7498d49d.html