Adds Vox as a station race, adds vox clothing icons from /vg/.

See: http://baystation12.net/forums/viewtopic.php?f=6&t=6806#p227578 for lore.
- Adds vox to the station whitelist.
- Adds a TON of icons from /vg/ for vox clothing.
- Adds sprite references to clothing for vox.
- Adds nitrogen internals spawning to the job controller.