Effeciency Project: APC / Machinery power usage.

We no longer run auto_use_power() on every machine every tick.
We now have a global list of areas, and areas that have an APC in them (all_areas and active_areas) no more looping through world bullshit.
A bunch of snowflakey as fuck machines won't use_power() in their process, you get two options, active and idle, use them!
This means a lot of machines won't double dip on power as well so power usage for the station has dropped about 20%

Because everything is snowflakey as fuck we're going to have some machines that don't force an update on their power usage.  Fuck them.
We should catch them with the root obj/machine/proc's forcing updates.

code/global.dm

@@ -7,6 +7,7 @@ var/global/obj/effect/overlay/slmaster = null
 
 
 var/global/list/active_areas = list()
+var/global/list/all_areas = list()
 var/global/list/machines = list()
 var/global/list/processing_objects = list()
 var/global/list/active_diseases = list()
@@ -115,7 +116,7 @@ var/list/reg_dna = list(  )
 var/mouse_respawn_time = 5 //Amount of time that must pass between a player dying as a mouse and repawning as a mouse. In minutes.
 
 var/CELLRATE = 0.002  // multiplier for watts per tick <> cell storage (eg: .002 means if there is a load of 1000 watts, 20 units will be taken from a cell per second)
-var/CHARGELEVEL = 0.001 // Cap for how fast cells charge, as a percentage-per-tick (.001 means cellcharge is capped to 1% per second)
+var/CHARGELEVEL = 0.0005 // Cap for how fast cells charge, as a percentage-per-tick (.001 means cellcharge is capped to 1% per second)
 
 var/shuttle_z = 2	//default
 var/airtunnel_start = 68 // default