teaches the Holdings view to determine the number of copies and call
numbers attached to each org unit based on the full data set (via new
API) instead of copies in hand, since we may only have copies in hand
for a subset of child org units.
Signed-off-by: Bill Erickson <berickxx@gmail.com> Signed-off-by: Mary Llewellyn <mllewell@biblio.org> Signed-off-by: Jane Sandberg <sandbergja@gmail.com>