[FIX CI] vertrag.feature
[FIX CI] inventarhelfer
Fix CI: various feature files (build #1047)

Fix CI: features/examples/explorative_suche.feature:21

Fix CI: features/examples/kategorien.feature:75

Fix CI: features/examples/modell.feature:82

Fix CI: features/examples/modell.feature:98

Fix CI: features/examples/pakete.feature:15

Fix CI: features/examples/zweck.feature:54
Fixing grammar.
Disable English (US) and make sure existing users of English (US) have a valid language chosen.
Logic mistake.
Merge branch 'rca_remove_english_us' of github.com:zhdk/leihs into rca_remove_english_us