9.1
test edit and update actions
add sign_in step to edit and update tests
remove odd repeat of sign_in
add "wrong user" tests
add correct_user private method
add current_user? helper
remove setting user from edit and update methods, as correct_user now gets it
friendly forwarding
require signed_in_user for index action
9.3.1 complete user index
add db:populate with test data using Faker
add pagination gems
users pagination
add admin property to User
add destroy action for admin and admin only
9.6.1 - add test verifying that admin attr isn't accessible
9.6.2 - use link_to target: "blank"