WDL: extract lanaguage specific statements to own language module.
Add multi language support to specification discovery.
Implement language guessing based on filename.
Add traceback info to parser.
Implement German language parsing.
Regenerate translation files.
Translate action groups to German.
Parse translated action groups for translated specifications.
Fix zcml-additional-fragments in development.cfg.
Show translated and original action group name in details view.
Update changelog.
Refactor translations test to automatically include all languages.
Refactor languages test to automatically include all assets.
Update readme.
Merge pull request #32 from 4teamwork/jone-multilingual

Support for German workflow specifications