Authorization: Part I
 Changes to be committed:
	modified:   app/controllers/application_controller.rb
	modified:   app/controllers/users_controller.rb
	modified:   app/helpers/application_helper.rb
	modified:   db/development.sqlite3
	modified:   db/test.sqlite3
	modified:   log/development.log
	modified:   log/test.log
	new file:   spec/controllers/users_controller_spec.rb
	modified:   spec/features/delete_user_spec.rb
	modified:   spec/features/edit_user_spec.rb
	modified:   spec/features/list_users_spec.rb
	modified:   spec/features/show_user_spec.rb
	modified:   spec/support/attributes.rb