number of digits in group sensors

[tomsoftcom]

I observe the group sensors have the default number of digits, while the individual sensors have two more digits.
This makes it a bit confusing, when checking the group correctly summing up the values very easy. After burning the lights for an hour or two it becomes apparent, the group sensor is doing the right thing, but with the more precise digits just zero. Maybe this should be aligned.

[bramstroker]

For the individual energy sensors the rounding was increased from 2 to 4 as requested by another user #104.
For the new group sensors I have set the rounding to 2 digits. Did not remember this was set to more decimals for the individual sensors.

I can set the group sensors to also have 4 digits to have these aligned.

Additionally a configuration option energy_sensor_precision could be added, but I'm not sure this is really needed. What do you think?

[tomsoftcom]

I agree, having it configurable probably would be just too much, but having it aligned would probably have avoided my initial confusion.

[bramstroker]

has been changed #303