Refactoring accounts
Refactoring view of courses
Using generated methods by rails
Using standart model check
Merge branch 'feature/news_without_picture' into staging
Merge branch 'feature/airbrake_and_fixing_routes_103_104' into staging

Conflicts:
	app/views/web/courses/index.html.haml
	app/views/web/courses/show.html.haml
Merge branch 'feature/course_additions_91_99' into staging

Conflicts:
	app/views/web/courses/show.html.haml
Correcting levels in view