Adds pandarsenic's approved custom cyborg

http://baystation12.net/forums/viewtopic.php?f=33&t=10641
Merge pull request #5383 from Jarcolr/custom_synthethic

Adds Pandarsenic's approved custom cyborg sprites
Merge branch 'derelict' of https://github.com/Zuhayr/Baystation12 into dev
Some minor fixes to new areas.