if the identified item is a map, show the entries
if it is a list, show the items with an index
(thinking about having a third one; if the list consists of map items, show the entries of those too, but we need list addressing (#405) to do that right)

also added a show_json command which simply prints the complete item and all its children in JSON format

temporarily added a few fake config_data items to Auth to play around with. we'll need to remove these before merge later


git-svn-id: svn://bind10.isc.org/svn/bind10/branches/trac384@3443 e5f2f494-b856-4b98-b285-d166d9295462