add default ransack sorting
Merge branch 'feature/218_lectures_sort_change' into staging
Merge branch 'feature/217_add_ransack_to_admin_panel' into staging

Conflicts:
	app/views/web/admin/news/index.html.haml
	app/views/web/admin/pages/index.html.haml
Merge branch 'develop' into staging

Conflicts:
	app/controllers/web/lectors_controller.rb
	config/locales/activerecord.yml