Bug 11175: Search using double quotes to support Elasticsearch

Bug 11175: Search using double quotes to support Elasticsearch

With Elasticsearch if you would use the search string here without the
change to double quotes, i.e.

(rcn='1234' AND cni='FI-XXX') OR rcn='FI-XXX 1234'

then the search would somehow manage to return a record with 001 =
1234 and 003 = FI-XXX. Using double quotes prevents that. Also using
parenthesis around the latter part of the OR seems to work:

(rcn='1234' AND cni='FI-XXX') OR (rcn='FI-XXX 1234')

Signed-off-by: Pasi Kallinen <pasi.kallinen@koha-suomi.fi>
Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>
Signed-off-by: Andrew Nugged <nugged@gmail.com>
Signed-off-by: Marcel de Rooy <m.de.rooy@rijksmuseum.nl>
Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>