Display Kilowatts and Wh Counter

[Jastroger]

Hi,

I have different integrations which differ in displaying the total energy value. I use your regex to show all of them by using the | regex. Works great except one thing: I have different types of counters. Some of them are showing in Wh and some in KWh. Currently your chart does not check the unit, so I have 8352Wh using more chart space than 108.914kWh caused by the different units. The unit-of-measurement seems not to be used at all.