Update LAV Filters to 0.59.1-101-cacb3da (custom build based on
0.59.1-96-30a903b).
* Update translations from Transifex:

- Basque
- Chinese (simplified)
- Czech
- British English
- French
- German
- Polish
- Turkish
- Slovak(
- Slovenian
Readme.md: switch to markdown syntax for the coverity badge.