Bug 23851: Add the homebranch prefix to the barcode when adding multiple copies of...

Bug 23851: Add the homebranch prefix to the barcode when adding multiple copies of an items

See the comment in the code for more information.

Test plan:
- Set autoBarcode to hbyymmincr
- Create an item and click on the barcode field
- A barcode prefixed by the homebranch is generated
- Click the "Add multiple copies of this item" and enter 4
- Save
=> Without this patch only the first item has the homebranch prefix
=> With this patch applied they all have a barcode in the same format

Signed-off-by: Katrin Fischer <katrin.fischer.83@web.de>
Signed-off-by: Marcel de Rooy <m.de.rooy@rijksmuseum.nl>
Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>