Display values in Charge Prices in ct/kWh, not €/kWh

[ptar]

A common price in Germany is somewhere between 20 or 30ct/kWh, most probably with 2 decimals, like 28.41, 27.84, 24.04 or 23.51ct/kWh.
Due to the current rounding as a €-value with 2 decimals, the examples above will be shown as 0.28, 0.28, 0.24 and 0.24, i.e. some are becoming indifferent.
So please display those values as ct/kWh with 2 decimals.
Similar issues should arise with $, £ or Swiss Franc.