Tactical overview is missing a timeline

[slalomsk8er]

Is your feature request related to a problem? Please describe.

While rolling out a new release of check plugins it would have been helpful to see the number shifting in a timeline additional to the doughnut chart in the tactical overview.

Describe the solution you'd like

A stacked percentage area chart like this one https://docs.anychart.com/Basic_Charts/Stacked/Percent/Area_Chart under the doughnuts would help recognizing trends.