React Comments (8.x-1.0-alpha4) - en to ca translation catalogue (7 entries)

en: Comments
ca: Comentaris

en: Timestamp
ca: Marca horària

en: User
ca: Usuari

en: Comment
ca: Comentari

en: Published
ca: Publicat

en: Deleted
ca: Eliminat

en: Unpublished
ca: Sense publicar
