Minor improvements and updates
- Add dmsetup and losetup output in WhisperBack reports to help debug
VeraCrypt-related issues (Closes: #15966).
- Let AppArmor allow access to /usr/local/share/mime, reducing noise
in logs due to many DENIED entries (Closes: #15965).
- Use proper stem.connection module in onion-grater instead of trying
to read the auth cookie manually: that's fragile and breaks some use
cases (e.g. custom auth cookie).
- Unlock VeraCrypt Volumes: Improve internationalization support.