Unit for UPS runtime should be user selectable

[MilhouseVH]

Added Feature Request:

UPS Runtime Graph: Choose between units of day, minutes or even seconds

Currently the UPS Runtime is graphed using units expressed in days, eg. 0.03 days. 0.3 days is shown for an actual runtime of ~3200 seconds or ~54 minutes), and a Max figure of 0.1 days (unlikely - that would be 8640 seconds which is almost possible) and both Mean and Min are entirely missing (0.0 days). 0.03 days and 0.1 days are not very “friendly”, or even useful, units, at least not for smaller UPSs. Being able to choose between minutes (or even seconds) as an alternative unit to days for…