Bug 13404 - More System information about GRS1 vs DOM settings

Bug 13404 - More System information about GRS1 vs DOM settings

System information indicates missing <zebra_bib_index_mode> and <zebra_auth_index_mode> entries in koha-conf.xml.

This patch

- adds warnings about a possible mismatch between these settings and the actual setup
- adds info about the actual setup/what values to use for <zebra_bib_index_mode> and <zebra_auth_index_mode> if they are not set.

The assumption is that a path including 'zebra-*-dom.cfg' in the respective section indicates a DOM setup.

Signed-off-by: Chris Cormack <chris@bigballofwax.co.nz>
Signed-off-by: Marcel de Rooy <m.de.rooy@rijksmuseum.nl>
Signed-off-by: Tomas Cohen Arazi <tomascohen@gmail.com>