Bug 13962: Add vendor to acq details tab in staff

Bug 13962: Add vendor to acq details tab in staff

Implementing some feedback from our user meeting:
The acquisition details tab on the detail page
in staff should also show the vendor of the
order.

To test:
- Make sure AcquisitionDetails is active.
- Create an order or look up an order in the
  acqusition module.
- Go to the ordered record and check the
  'Acquisition details' tab
- Verify the vendor shows up there as first
  column now
- Check that sorting and display of the other
  columns are still working correctly

Note: Also fixes a </th> that should be a </td>
Signed-off-by: Aleisha <aleishaamohia@hotmail.com>
Signed-off-by: Jonathan Druart <jonathan.druart@koha-community.org>
Signed-off-by: Tomas Cohen Arazi <tomascohen@theke.io>