Merge branch 'master' of https://github.com/tootsuite/mastodon

# Conflicts:
#	app/controllers/settings/exports_controller.rb
#	app/models/media_attachment.rb
#	app/models/status.rb
#	app/views/about/show.html.haml
#	docker_entrypoint.sh
#	spec/views/about/show.html.haml_spec.rb

app/views/layouts/public.html.haml

@@ -1,5 +1,5 @@
 - content_for :content do
-  .container= yield
+  .container-alt= yield
   .footer
     - if !user_signed_in? && single_user_mode?
       %span.single-user-login