Bug 17458: Remove use of datereceived from order receive page

Bug 17458: Remove use of datereceived from order receive page

Before this patch the order receive page (parcel.pl) would show
... Received by: <current user> On: <current date>

This is not really helpful. Whenever you viewed an invoice, it
would tell you it was _you_ who received that _today_.

As we don't store a creator of an invoice and the order lines
in an invoice could have been received by different people (which
we also don't know about), the "Received by" is removed by this patch.

Instead of today's date, we can show the shipment date entered for
the invoice. Again: different order lines could have been received
on different dates for this shipment. So only the shipment date makes
sense as it's on invoice level.

This also makes changes to the page title, breadcrumby and page heading:
When the invoice is closed, they will read:
  Receipt summary for [vendor] ...
When the invoice is not closed, they wil read:
  Receive orders from [vendor] ...

To test:
- Create a basket with some orders in acq
- Close the basket
- Receive shipment and create an invoice
  - Make sure shipment date is not set to today
- Verify the information shown on top of parcel.pl is you and today
- Change staff users
- Go to your invoice, it's now this user and today
- Apply patch
- Received by: should be gone and the On: replaced by Shipment date:
  with the date you selected
- Check the page title, breadcrumbs and headings read all the same 'Receive orders...'
- Finish receiving and close the invoice
- "Go to receipt page"
- Verify they now read "Receipt summary.."

If you have older invoices in your system, it would work
even better with these as you'd see that always today's date
is displaying without the patch.

Signed-off-by: Marjorie <marjorie.barry-vila@collecto.ca>
Signed-off-by: David Nind <david@davidnind.com>
Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>
Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>