synapse list command line shouldn't list the parent container
'synapse list syn123' shows 'syn123' as first entry. It would be more intuitive (as normal 'ls' does) to just list the contents of the container.
hooray! no longer shows parent container. easy peasy parsing now.
This request is actually easier to implement than the current behavior, which listing the parent. However, we should double check that implementing this does not break any other users.