Check_MK Werk 2717: Fixed broken webserver level authentication integration (e.g. basic, kerberos)

ID: 2717 Title: Fixed broken webserver level authentication integration (e.g. basic, kerberos) Component: Multisite Level: 2 Class: Bug Fix Version: 1.2.7i4 Fixed a regression which broke the integration of the Check_MK GUI into an authentication which is done by the web server. This is for example a basic or kerberos authentication.