Automatic Light|Dark theme depending on users setting

[Decstasy]

Expected Behavior

The dark or light theme is automatically choosen depending on the users individual setting.

Current Behavior

It's globally controlled by one parameter of the module.

Context

I like it dark, other like it light and either way it looks ugly, when thees settings are not aligned with the overall theme :) Icingaweb2 has this functionality, would be nicer if the Grafana module would act in the same way.

Best regards, Dennis