split User name attribute to first_name and last_name, remove User admin attribute
add full_name User method
generate users_controller
add user routes: show, edit, update, destroy
create User show page
add params to devise sign_up permitted parameters, update full_name User instance method
enable users_controller edit action, add show and edit links to navbar
enable edit User functionality
cancan authorization so only current user can edit current user's profile
add cancan authorize to User update action
add delete User action, add delete and edit links to users_admin table