Very important improvements and fixes.
- [Improved] MariaDB supported versions are now based according to the OS version.
- [Improved] MariaDB repo updated.
- [Improved] Old and obsolete code removed and some other generally improved and updated.
- [Improved] Memcache legacy extension removed in most newest configurations.
- [Fixed] SMTP duplicate configuration lines.
- [Fixed] Tools-site reset showing an error when domain is set.
- [Fixed] SSL wildcard certs failing to add subdomains.
- [Fixed] Site delete try to revoke ssl cert even when certbot not installed.