Create partial user and render it from index view
Render users directly from @users
Add admin attribute to User
Default first user as admin
Add delete link so that admins can delete users
Rearrange user_params to stay inside 80 characters per line
Add destroy method
Confirm only admin can delete users
Add admin to first user
Test that users who aren't logged in should be redirected to the login page, and users who are logged in but who aren't admins should be redirected to home page
Add destroy to before_action :logged_in_user
Add test to check that admin can use a delete link to destroy a user and verify that the user actually gets deleted