Merge commit '16dd3f08c1e5396d5f9ff3f13417901bc4e4b8b9' into glitch-soc/merge-upstream

Conflicts:
- `app/views/settings/preferences/appearance/show.html.haml`:
  Upstream fixed a translation bug in the theme selector that is absent from
  glitch-soc due to our different theming system.
  Discarded upstream changes.
- `streaming/index.js`:
  Upstream changed the signature of a function to change its return type.
  This is not a real conflict, the conflict being caused by an extra
  argument in glitch-soc's code.
  Applied upstream's change while keeping our extra argument.

app/controllers/admin/dashboard_controller.rb

@@ -14,15 +14,5 @@ module Admin
       @pending_tags_count    = Tag.pending_review.count
       @pending_appeals_count = Appeal.pending.count
     end
-
-    private
-
-    def redis_info
-      @redis_info ||= if redis.is_a?(Redis::Namespace)
-                        redis.redis.info
-                      else
-                        redis.info
-                      end
-    end
   end
 end