[automatic translation update] Updated 456 strings in 6 languages (bg, fr, ja, nn, pl, ro)

- Updated Bulgarian (21 changes / 92% translated)
- Updated French (41 changes / 96% translated)
- Updated Japanese (114 changes / 74% translated)
- Updated Norwegian Nynorsk (2 changes / 51% translated)
- Updated Polish (10 changes / 60% translated)
- Updated Romanian (268 changes / 79% translated)