Bug 7079: [SIGNED-OFF] Default values for German system preferences

Bug 7079: [SIGNED-OFF] Default values for German system preferences

Patch adds updates for system preferences to the sql file
in the installer directory:

- New: AmazonLocale: DE
- borrowerRelationship: Vater|Mutter
- BorrowersTitles: Herr|Frau
- New: CurrencyFormat: FR
- New: dateformat: metric
- New: DefaultClassificationSource: z
- New: OpacMainUserBlock: translated content
- New: OpacNav: translated content
- New: OpacNavBottom: translated content
- New: OPACSearchForTitleIn: translated content

To test:
A) Do a full installation with German sample files
B) Run the sql file 'system_preferences.sql' against your database

Verfy values of system preferences have been changed.

Signed-off-by: Magnus Enger <magnus@enger.priv.no>
Patch applied cleanly. I ran through the webinstaller in German on an empty
database, and made sure system_preferences were loaded. No complaints from
the database and the systprefs are set to the right values when I check in the
staff client.

Signed-off-by: Paul Poulain <paul.poulain@biblibre.com>