Bug 10901: Add datatables to the add item page

Bug 10901: Add datatables to the add item page

For a biblio with a lot of items, it is not easy to find the one you
want to edit.

Test plan:
Try to edit/delete item from the add item page.
Verify there is no regression on this page.

Signed-off-by: Pierre Angot <tredok.pierre@gmail.com>
Signed-off-by: Katrin Fischer <Katrin.Fischer.83@web.de>
Passes all tests and QA script.
Adding, editing and deleting items still works.
Search provides useful help for locating the correct items.

Signed-off-by: Galen Charlton <gmc@esilibrary.com>