Checkmk Werk 15074: Improved host/service label filters

ID: 15074 Title: Improved host/service label filters Component: Multisite Level: 1 Class: New feature Version: 2.2.0i1 This change implements the current main feature request from the Checkmk feature portal: Host and service label filters now allow for more complex queries, using logical operators 'and', 'or', 'not'. Additionally, the labels to filter by can be grouped, and label groups can be connected through the logical operators 'and', 'or', 'not' as well.