Bug 20075: Adjust installer files for de-DE up to pl-PL

Bug 20075: Adjust installer files for de-DE up to pl-PL

We are replacing the values -5 or 8 here by 1 for the hidden field in
auth_subfield_structure.
Note that 1 is mainly used in MARC21 and -5 in UNIMARC.
Since it is a boolean, I choose here for keeping 0 and 1.

The value 8 was only used for field 942 in MARC21 files.
The value -5 was replaced in
en/marcflavour/unimarc/mandatory/authorities_normal_unimarc.sql
it-IT/marcflavour/unimarc/necessari/authority_framework.sql
pl-PL/marcflavour/unimarc/mandatory/authorities_normal_unimarc.sql

NOTE: The french unimarc files
fr-FR/marcflavour/unimarc_complet/Obligatoire/autorite_default.sql
fr-FR/marcflavour/unimarc_complet/Obligatoire/autorites_norme_unimarc.sql
fr-FR/marcflavour/unimarc_lecture_pub/Obligatoire/autorites_norme_unimarc.sql
seem to display all fields, since hidden is 0 everywhere.

Test plan:
Test a new install in one of the languages.
Or run the sql script on an empty database.

Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>