fix: update exception handling and schema urls

Main changes include:

• Replaced QUI\\System\\Log::writeException($Exception); with QUI\\System\\Log::addInfo($Exception->getMessage(), [...]); for more detailed logging.
• Updated schema urls from http://schema.org/Blog to https://schema.org/Blog and http://schema.org/BlogPosting to https://schema.org/BlogPosting for better compliance with standards.
• Removed an unexpected empty line from entry.php.