Display fileset id on import

Primarily useful at the moment for having a fileset
ID for testing delete, the Fileset lookup should be
clearly defined in importImage(). As it currently
stands, getting hold of the fileset is probably too
complicated.
Simplest Fileset spec (for deletion)

This deletes all of the objects which are connected to a fileset
and requires that all of them be fully deleted to pass. This may
be a too strict interpretation of what should happen, and some
dangling objects (specified by a "SOFT" parameter) could be allowed.