cascade status: work on broken tree, show node type
cascade status: work on broken tree, show node type

- Show node type after name

- Allow several roots, take nodes with missing parents as roots

It still cannot work on cycles.  But as the change-provider code
should avoid making those, maybe it's not worth worrying about.

markokr/skytools,overdrive3000/skytools,overdrive3000/skytools,tarvip/skytools,markokr/skytools,tarvip/skytools,overdrive3000/skytools,tarvip/skytools,markokr/skytools