Bug 6820 - hide receive option if there is nothing to receive

Bug 6820 - hide receive option if there is nothing to receive

The "receive shipment" button appears even if there are no orders to receive.
This patch hides the button if there are no orders.

To test the patch:
1. Go to "aquisitions"
2. Create a vendor
3. As the newly created vendor has no orders, there will now be no "receive shipment" button
4. Create a basket
5. Go back to the vendor search
6. The button should now appear for that vendor

I've also tested it with a mix of vendors with and without baskets in the same search.

Followed test plan, works as expected.
Signed-off-by: Marc Veron <veron@veron.ch>
Signed-off-by: Kyle M Hall <kyle@bywatersolutions.com>
Signed-off-by: Tomas Cohen Arazi <tomascohen@gmail.com>