LP#1745499 De-Parallelify Item Status file upload

LP#1745499 De-Parallelify Item Status file upload

Fetch copies in a series instead of in parallel when loading copy
barcodes from a file in the Item Status interface.  This helps avoid
excessive pcrud process count.

Since this causes the action to take a little longer, the commit also
includes a progress dialog indicating copy retrieve progress.

Signed-off-by: Bill Erickson <berickxx@gmail.com>
Signed-off-by: Galen Charlton <gmc@equinoxinitiative.org>
Signed-off-by: Jason Stephenson <jason@sigio.com>