implements command for delete user
implements commands for updating a user (basic commands only)
implements address-builder
implements email-builder
implements entitlement-builder
implements im-Builder
implement phonenumber-builder
implements photo-builder
implements role-builder
implements certificate-builder
move subshell logic to separate class
add commands for showing entities
remove setOperation commands (will be used for create/update/delete
action)
implements delete entity mechanism