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