AVG power field

Data field made on request. This is an update of the data field "Average power field" by the author "reiler", who is not planning new versions. For that reason it is only made for newer devices. It is possible to set three time ranges for the average power. The MAX AVG value is calculated for a set time interval and displays the maximum for that time since the activity started.

I spent several hours programming the data field and would be grateful for any PayPal contribution:. https://bit.ly/2vyeuAg 1.3.1 - Modified font size selection logic