Bug 36341: (follow-up) Fix missing Date_from_syspref

Bug 36341: (follow-up) Fix missing Date_from_syspref

It appears this bug introduces the first actual use of this function in
the OPAC and thus exposes that bug 31261 didn't fully port the
Date_from_syspref from the intranet.

Signed-off-by: Katrin Fischer <katrin.fischer@bsz-bw.de>
(cherry picked from commit 04d3cf07a858a5efc129b2f78e62d8dd8148b742)
Signed-off-by: Fridolin Somers <fridolin.somers@biblibre.com>
(cherry picked from commit ab7a3ff196459e419230794d1a50cfa8f1e4efcd)
Signed-off-by: Lucas Gass <lucas@bywatersolutions.com>