Neuerungen & Verbesserungen:
- NEW: Add option for PHP releases >= 5.6 to allow self signed certificates when sending mail
- Allow offline content to be attached as related link
Fehlerbehebungen:
- fix: cater for PHPMailer autoloader changed functionality
- fix: better MySQL-Client detection during setup, better native PHP version check
Sonstiges:
- minor code changes to silence some PHP7 -> PHP5 warnings