Feature/add more information to download#183

Created by: wasabideveloper

Implementation of feature #183 (closed) (Merge will close #183 (closed) ).

• locales not compiled
• ran tests
• tested views by hand:
  • /orders/
  • /orders/{id}
  • /downloads/
  • /downloads/{uuid}
• tested workflow "extract excerpt and download converted files" by hand

To be reviewed by:

• @das-g
• @njordan-hsr