Improvements:
- Add thumbnail quality parameter (default to 95)
- Always display SQL errors
- Move SimpleLogger lib into app source tree
- Add system log driver and use it by default
- Display exceptions from plugins while refreshing board
- Redirect to original URL after OAuth login
- Add author name and email arguments to mail client
- Improve HTTP client to raise exceptions
- Update translations
Bug fixes:
- Fix broken daily summary export
- Fix role precedence in LDAP integration