- Modified patch #18656 by Moshe: unifies the admin comment form and the usual comment form, similar to what we did for nodes. This resulted lots of duplicate code removal.  Also gave administrators the ability to change the author and timestamp of a comment.  Also removed comment links from the bottom of the comment preview box (as we did for nodes)

  Modifications: fixed breadcrumbs, tidied up delete confirmation page to be consistent with node deletions..