Checkmk Werk 10250: Mail graphs: Do not render in dark theme style

ID: 10250 Title: Mail graphs: Do not render in dark theme style Component: Notifications Level: 1 Class: Bug fix Version: 1.7.0i1 The graphs in HTML mails were rendered in dark theme style when the dark theme was configured as default theme in the global settings. These graphs should not be themed, just like the graphs in the PDF reports.