Unifies powernet/power machinery

Created by: clusterfack

Will likely fix some bugs where powernets seem to drop off for a tick then come back double.

Also modifies power machines back to their original 100% tested second workload time. The original change of 2 -> 4 seconds was pretty dumb (and not discussed by anyone) because it made things like supermatter and singulo extremely less lethal.

Also power machines barely even use any processing time in the first place so it makes minimal difference lag-wise whether it is 2 or 4 seconds between processes