Bug 11243: make vendor list distinguish between active and canceled items

Bug 11243: make vendor list distinguish between active and canceled items

On the vendor result list, the "Item count" columns contain the sum of
all items ordered for a basket. But if an order is canceled, the item
count is not really meaningful.

This patch just adds, in parenthesis, the number of items canceled.

Test plan:
- create a basket and 3 orders with different number of items
- cancel 1 order
- verify on the supplier list that the number of items is correct and
  the number of canceled items is correct too.

Signed-off-by: Owen Leonard <oleonard@myacpl.org>
Signed-off-by: Chris Cormack <chris@bigballofwax.co.nz>
Signed-off-by: Katrin Fischer <Katrin.Fischer.83@web.de>
Passes all tests and QA script.

Note: In case the biblio was deleted when the order was cancelled,
the number of biblios will be off.

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