Sidekiq configuration with namespace added
Devise helper refactored
Application helper refactor...
JSON responses removed from users controller...
Application controller refactor...
Application exception concern refector...
Merge ../x0y0

Conflicts:
	.travis.yml
	Gemfile
	Gemfile.lock
	app/controllers/application_controller.rb
	app/controllers/concerns/application/exceptions.rb
	app/helpers/application_helper.rb
	app/helpers/devise_helper.rb
	config/initializers/sidekiq.rb
	test/integration/public_user_interactions_test.rb