Implement role authorization
fix conflicts
fix style
fix style
fix style
fix
fix
fix in questions
db
style fixes
fix from rebase

Conflicts:
	app/views/layouts/_admin_sidebar.html.haml
write in 1 single line actions with no body

Conflicts:
	app/controllers/admin/contacts_controller.rb
fix from rebase
style
create @user with cancan for remove_user action
fixes
migrate roles
changes from comments, fix commercials failing test
migration for old roles
base controller

Conflicts:
	app/controllers/admin/commercials_controller.rb
	app/controllers/admin/questions_controller.rb
	app/controllers/admin/users_controller.rb