Improve admin UI for accounts (#7360)

* Improve design of account statuses admin UI (consistent with reports)

* Make account moderation notes look consistent with report notes

* i18n-tasks remove-unused

* Fix code style issues

* Fix tests

app/views/admin/reports/_status.html.haml

@@ -7,7 +7,7 @@
         %p><
           %strong= Formatter.instance.format_spoiler(status)
 
-      = Formatter.instance.format(status)
+      = Formatter.instance.format(status, custom_emojify: true)
 
     - unless status.media_attachments.empty?
       - if status.media_attachments.first.video?