Checkmk Werk 14307: Fix minimal session idle timeout in global setting

ID: 14307 Title: Fix minimal session idle timeout in global setting Component: Multisite Level: 1 Class: Bug fix Version: 2.2.0b1 The default session idle timeout was changed to 90 minutes with #12061. In this step also the minimal possible value was accidentally set to the same value. The minimal value has now been set back to 60 seconds as before.