Nano UI for SMES

Screenshot:
http://imgur.com/63D3f8b
Buttons are greyed because there's no input available.
Forgot to include the template :(
On second thought, allow turning input/output on and off on SMES no matter what.
Also added a messages telling you specifically if the SMES is actually charging or outputting.

Also clean up some unnecessary shit.
Merge branch 'master' of https://github.com/tgstation/-tg-station into NanoSMES

Thanks Razharas, hehe
Merge new SMES vars and Nanou in with constructable SMES and whatnot
Way to leave those debug messages in, self
Merge pull request #2655 from MrPerson/NanoSMES

Nano UI for SMES