ACQ upload form widget value persistence

ACQ upload form widget value persistence

Provides a two-layer persistence mechanism for the ACQ MARC file upload
interface(s).  For most of the widgets in the upload form, there is now
a matching org unit setting for configuring values ahead of time.  When
such a value is configured, the value will be used.  When no org unit
setting value is configured for a field, the value selected by staff is
stored locally (at the workstation) and re-used for future loads of the
interface.

Signed-off-by: Bill Erickson <berick@esilibrary.com>