Internalisation: follow data format from the backend

[PascalinDe]

The backend e.g. sends the information in the form of

{en: 'english title', de: 'german title', fr: 'french title'}

which gets transformed into flat strings Title, TitleDe and TitleFr, which is less flexible than the data format above. The frontend should follow the Object/Map structure as well to allow for easier handling translations.