Bug 16296 - Fix records displaying in virtualshelves

Bug 16296 - Fix records displaying in virtualshelves

Test plan:
- Empty OPACXSLTResultsDisplay system preference,
- select a virtual shelf in the dropdown list "Lists" on navigation bar
  (Or create one and add records),
- check that records are correctly displayed (title, author, publisher
  etc...).

Signed-off-by: Bernardo Gonzalez Kriegel <bgkriegel@gmail.com>
Display is now correct
No errors

Signed-off-by: Marcel de Rooy <m.de.rooy@rijksmuseum.nl>
Signed-off-by: Brendan Gallagher <brendan@bywatersolutions.com>
(cherry picked from commit 8c807b9466b005b2094320d7fabf07e9e91d3607)
Signed-off-by: Julian Maurice <julian.maurice@biblibre.com>