SAML configuration

Please add to 'Advanced settings' a documentation what to do when there is a load balancer with TLS/SSL which redirects traffic to Zabbix instance without TLS/SSL:

If using a load balancer to connect to Zabbix instance, where load balancer uses TLS/SSL and Zabbix does not, you must indicate 'baseurl', 'strict' and 'use_proxy_headers' parameters as follows:

$SSO_SETTINGS=['strict' => false, 'baseurl' => "https://zabbix.example.com/zabbix/", 'use_proxy_headers' => true]