Check_MK Werk 6291: Werk list: Fixed input validation and error handling

ID: 6291 Title: Werk list: Fixed input validation and error handling Component: Multisite Level: 1 Class: Bug fix Version: 1.6.0i1 Input errors on the werk list page were not validated correctly. This could lead to empty werk lists when using invalid values in the "Searching & Filtering" form without displaying a helpful message. The error handling of input issues has been improved by displaying error messages above the form and highlighting the fields in question when an error occured.