Bug 21385: Correctly count all items in basket for booksellers list

Bug 21385: Correctly count all items in basket for booksellers list

To reproduce:

1) Create a basket with 2 biblios, one with 2 items and one with 1 item
2) Search for vendors and note the basket above should contain 'Item
count 3', 'Biblio count 2', 'Items expected 3'
3) Receive shipment, and only receive 1 of the items on the biblio with
2 items above.
4) Search for vendors and note that the 'Item count' for the basket
above is now '2'.

The item count for a closed basket should remain the same and should
differ from the 'items expected' count some items have been recieved.

Signed-off-by: Caroline Cyr La Rose <caroline.cyr-la-rose@inlibro.com>
Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>
Amended patch:
FAIL   C4/Acquisition.pm
   FAIL   spelling
     RECIEVED  ==> RECEIVED

Signed-off-by: Nick Clemens <nick@bywatersolutions.com>