Merge remote-tracking branch 'origin/master' into error-info

# Conflicts:
#	app/controllers/concerns/submission_scoring.rb
#	app/views/application/_navigation.html.slim
#	config/locales/de.yml
#	config/locales/en.yml
#	db/schema.rb

test/models/subscription_test.rb

@@ -0,0 +1,7 @@
+require 'test_helper'
+
+class SubscriptionTest < ActiveSupport::TestCase
+  # test "the truth" do
+  #   assert true
+  # end
+end