Bugfixs and improvments

Changelog :
- Fix some captchas not solving after clearing them.
- Fix Rnd Text not disabling during posting
- Fix some HTML special chars not replaced during scraping
- Don't load old captchas at startup because they are probably expired.
- Fix <br> tags not being replaced by new lines
- Set default timer count to 0 instead of 5
- Reload boardlist before downloading
- Updated assembly infos