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

Conflicts:
	app/controllers/accounts_controller.rb
	app/javascript/mastodon/locales/pl.json
	app/views/about/more.html.haml

Conflicts in `accounts_controller.rb` resolved by taking upstream's
version + our `use_pack`.

Conflicts in `pl.json` resolved by taking upstream's changes.

Conflicts in `aboute/more.html.haml` resolved by taking upstream's changes.

app/controllers/about_controller.rb

@@ -10,9 +10,13 @@ class AboutController < ApplicationController
     @initial_state_json   = serializable_resource.to_json
   end
 
-  def more; end
+  def more
+    render layout: 'public'
+  end
 
-  def terms; end
+  def terms
+    render layout: 'public'
+  end
 
   private