Simplify (8.x-1.0) - en to unknown language translation catalogue (6 entries)

en: User interface
target: interfatscha d'utilisader

en: Taxonomy
target: taxonomia

en: Authoring information
target: infurmaziuns  autura

en: Comment settings
target: preferenzas enstagl commentaris

en: Relations
target: relaziuns

en: Book outline
target: register da(l) cuntegn
