Updated translations (using Weblate):
- Added the full Serbian translation (thanks to eevan78).
- Added the partial translation in Bulgarian (thanks to trunars).
- Added the partial translation in Esperanto (thanks to phlostically).
- Updated German translation (thanks to Pixelcode)
- Updated Japanese translation (thanks to しいたけ).
- Added the translation of the description into Italian (thanks to moreno matassini).
What's new:
- A few adjustments to text styles.
- Added icons in front of dialog box list items.
- Updated OFF, OBF and OPFF logos.
- Minor improvements.
- Updated dependencies.