#3 Support substructures beyond ChoiceFormItems

[Mikael Nilsson]

Three cases:

1)

res -> dc:subject -> URI

The URI is taken from a vocab, I want to copy
rdfs:label and rdfs:comment from the vocab to the
instance. I might also want to present them
(non-editable), so that the form is like:

Subject [ Physics v ]
Comment: Physics includes bla bla
MARC Code: 3245

2)

res -> dc:creator -> [vCard]

The vCard is presented as above, with a dropdown for
existing URIs. There is also a [fill in] that makes the
fields editable:

Creator: [Fill in v ]
Full name: [ ]
Organization: [ ]

Filling in the fields creates an anonymous resource,
with the given properties.

3)

res -> dc:language -> [RFC3066]

The RFC3066 instances exist in a vocabulary, but they
are anonymous. I want to present them as in case 1),
but when one is chosen, I want the data around the
anonymous nodes to be copied into the instance data,
similarly to the [fill in] in case 2.