Bug 12113: Update German web installer for 3.16

Bug 12113: Update German web installer for 3.16

Changes:
- Translates new notices SHARE_ACCEPT und SHARE_INVITE
- Copies subtag_registry.sql from en as after applying patch
  from bug 12275 - so 'Laotisch' will show up correctly
- Rephrases and corrects spelling for user permissions
- Translates new authorized value SIP_MEDIA_TYPE
- Improves translations of creator sample data
- Improves translations of sample patron categories
  - translations in po files were changed accordingly

To test:
- Run the web installer, install all mandatory and optional
  sample data
- Check everything is installed without errors
- Verify changes listed above in the interface

Signed-off-by: Bernardo Gonzalez Kriegel <bgkriegel@gmail.com>
Installer works ok, values ok
No errors

Signed-off-by: Brendan Gallagher <brendan@bywatersolutions.com>
Signed-off-by: Galen Charlton <gmc@esilibrary.com>