Bug 13147: Update German web installer files for 3.18

- Adds translations for new permissions
- Adds ISO code to the sample currencies
- Removes a comment line about branchrelations from
  sample_libraries (en)

To test:
- Run the German web installer with all sample data
  selected
- Verify it runs without problems
- If you speak German - verify the translations make sense

Signed-off-by: Owen Leonard <oleonard@myacpl.org>

No errors from the web installer. I verified that all the changes I saw
in the diff appeared correctly in the permissions. Currencies all
appeared to be correct after installation. Translations appeared to be
very German-looking.

Signed-off-by: Tomas Cohen Arazi <tomascohen@gmail.com>
Signed-off-by: Jonathan Druart <jonathan.druart@biblibre.com>
Signed-off-by: Tomas Cohen Arazi <tomascohen@gmail.com>
Bug 13347: Update credits for Arabic translation

The work from KnowledgeWare Technologies need to be
added to about page.

To test:
1) Apply the patch
2) Go to About page > Translations
3) Credits for Arabic must show updated information

(agreed between involved parties)

Signed-off-by: Tomas Cohen Arazi <tomascohen@gmail.com>
They all agreed on the attribution.

Signed-off-by: Katrin Fischer <Katrin.Fischer.83@web.de>
No problems found.

Signed-off-by: Tomas Cohen Arazi <tomascohen@gmail.com>
Bug 13353 - update version used by build script

Signed-off-by: Tomas Cohen Arazi <tomascohen@gmail.com>
Bug 13353 - combined changelog updates for 3.16

Signed-off-by: Tomas Cohen Arazi <tomascohen@gmail.com>