persist partial changes to new copies in vol/copy editor has new copies are gathered.

persist partial changes to new copies in vol/copy editor has new copies are gathered.

In other words, you can do something like enter 5 in the "# of Copies" field, enter the first barcode (say b1), edit an attribute (say, set Circulate = No), and then enter a second barcode (b2).  Previously, the changes made to b1 would be lost as b2 was entered (or as other movement around the barcode entry textboxes happened) and both copies would get a Circulate = Yes, but now in this scenario, you would see 1 copy set to No and 1 copy set to Yes for the Circulate attribute.

Signed-off-by: Jason Etheridge <jason@esilibrary.com>