Adds photocopier based faxmachine, removes redundant photocopier vars
Merge remote-tracking branch 'upstream/dev' into faxmachine
Ports more of /tg/'s powernet code.

Among other things this fixes a a bug where SMES would draw excess power from the powergrid they were outputting to, rather than drawing from.
Test-area
Implements sending faxes to admins
Removes unused file
Merge remote-tracking branch 'upstream/dev' into faxmachine
Merge remote-tracking branch 'upstream/dev' into APC. Updates map with new SMES variable names.
Changes labcoat code so coat buttoning isn't based on a giant switch, and icon states are set in the item itself rather than the logic for buttoning and unbuttoning.

labcoat_open is the icon state of the labcoat while open, and labcoat_closed is the icon state of the labcoat while closed.
Minor change for comments and defining the variables by full path.
Merge remote-tracking branch 'upstream/dev' into APC

Conflicts:
	code/game/gamemodes/events/power_failure.dm
	code/modules/power/smes.dm
Fixes compilation issues, SMES can again partially recharge.
All coats that can be buttoned are now subtypes of /obj/item/clothing/suit/storage/toggle

This includes labcoats, IA jackets, first responder jackets, and the brown leather jackets.

This way, code for button toggling doesn't have to be duplicated for labcoats and other coats, and it's easier to add other types of coats that can be buttoned up if someone wants.
Apparently the blue lawyer jacket didn't actually button up properly. Now it should button up, and uses the same system as everything else.
Forgot to actually set icon_open and icon_closed for labcoats. Whoops! Fixes that.
Some mildly offensive wording to less offensive wording. I'm not actually sure how that got in there.
Powernet Sensor
- Adds remote powernet sensors, power monitoring computers use these by default to monitor power around the station. Default range is 1 Z level + long range versions of sensors
- Powernet sensors mapped in, each subgrid has it's own one (ie: substations compatible)
- Telecomms, mining, research and engineering outposts have long range versions installed, visible even cross-Zlevels
- Powersinks and ninja gloves now trigger problem warning in powernets they affect. This warning is visible to anyone using power monitoring console. TODO: Add more stuff that triggers warnings.
- Powersinks now properly drain APC cells using CELLRATE (@2000W per APC max.)
- Powersinks buffed a bit, to compensate for CELLRATE change (previous line)
Implements better powernet warning system (as suggested by mwerezak)
Modifications to sensors code
- More stuff now triggers powernet warnings: People getting shocked by machinery (primarily door, but can be anything else powered by APC), and grilles. Thanks to @mwerezak for suggestion.
- Monitoring computer now has slightly different icon_state when it detects powernet warning. This is checked and updated every 5 MC ticks (ie, slightly delayed)
- Fixes ocassional runtime in powernet_sensor.dm
- Powersinks buffed a bit more. Drain rate changed from 0.6MW to 1MW. 1MW is full output of main engine SMES.
- Powersinks also dissipate small amount of internal energy charge over time. (20kW)
Fix for jobs that were spawning with the old labcoat types rather than the new ones, as well as lockers that were.