Bug 25129: Update German (de-DE) web installer sample files for 20.05

Bug 25129: Update German (de-DE) web installer sample files for 20.05

This translates the new notices and CSV profie for late orders,
makes some minor changes to the patron category descriptions
and numbering patterin labelling.

To test:
- Make sure German language is installed, see:
  https://wiki.koha-community.org/wiki/Installation_of_additional_languages_for_OPAC_and_INTRANET_staff_client
- Run the web installer and choose de-DE
- Select all sample files
- Make sure they all install without any errors

Bonus:
- If you can speak German, you can check the translations as well :)

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