Merge branch 'master' into glitch-soc/merge-upstream

Conflicts:
- app/controllers/about_controller.rb
- app/controllers/tags_controller.rb
- app/views/about/show.html.haml
- spec/views/about/show.html.haml_spec.rb

app/models/concerns/expireable.rb

@@ -18,7 +18,11 @@ module Expireable
     end
 
     def expired?
-      !expires_at.nil? && expires_at < Time.now.utc
+      expires? && expires_at < Time.now.utc
+    end
+
+    def expires?
+      !expires_at.nil?
     end
   end
 end