[ ] Instead of being a clickable link to the author page (all posts by that author, ugh), clicking on a user should stick the popup up (for mobile users in particular)
[ ] Clicking on another user should close other popups (hopefully automatic focus behavior)
[ ] Clicking on the user again should close the popup
[ ] Popup should include buttons for "Posts" (search for by:username, what is currently author view) and "Statistics"
[ ] Author page /<group>/author/<username> should perhaps be replaced by this content? (now that current list of posts can be replaced by search query)
[ ] For editing authors, add "Remove Author" button (#503)
[ ] For authors, add "History" button for filtering history by this author (#247)
by:username
, what is currently author view) and "Statistics"/<group>/author/<username>
should perhaps be replaced by this content? (now that current list of posts can be replaced by search query)