Hotfix release 2.3.5

This fixes:
- links at composer.json

Hotfix release 2.3.4

This fixes:
- Links in composer.json

Merge pull request #2 from MetaModels/hotfix/fix_translation

Add DE translation

Fixes:

- add DE translations

Fixes:

- fix label for monolanguage models

Feature release 2.3.0

New features:
- add translations to XLIFF
- add templates for output paypoad

Fixes:
- any fixes for PCHCQ
- fix readme