More configuration options for the different energy cards. (Specifically the energy-usage-graph)

[MaxderLange2008]

It would be great if you could configure the energy-usage-graph to display only a specific Energy Meter Value/Utility Meter Value. In my case, I would like to provide each of our renters with a view on a dashboard to gain insights about their electrical usage. With the original cards, I could only give each of them insights into all five Energy Meters.