Checkmk Werk 7821: Fix adding graphs with many metrics to reports / dashboards

ID: 7821 Title: Fix adding graphs with many metrics to reports / dashboards Component: Reporting & Availability Level: 1 Class: Bug fix Version: 1.7.0i1 When trying to add graphs with a larger number of metrics to a report or dashboard using the graph context menu, this resulted in an error "Request-URI Too Long" which is now fixed.