Bug 11260: Update German web installer - frequencies and numberpatterns

Bug 11260: Update German web installer - frequencies and numberpatterns

Translates the new files for frequencies and numberpatterns

To test:
- Run the German web installer with all sample files
- Check all files import without errors, especially frequencies and
  numbering patterns
- Check frequencies in serials
- Check numbering patterns in serials
- Create a subscription, check possible choices

Signed-off-by: Chris Cormack <chrisc@catalyst.net.nz>
Signed-off-by: Kyle M Hall <kyle@bywatersolutions.com>
Signed-off-by: Galen Charlton <gmc@esilibrary.com>
(cherry picked from commit fff04e59e785ce26f52da94730818c541476f7bb)
Signed-off-by: Fridolin Somers <fridolin.somers@biblibre.com>