Engine Room Redesign

Based on this thread: http://baystation12.net/forums/viewtopic.php?f=5&t=9528 and this thread: http://baystation12.net/forums/viewtopic.php?f=5&t=9467

Changes:
- Added engine monitoring room
- Tweaks to the engine room
- Engine room taken off main power grid - power now regulated by SMES
- Added directional sprites to pod doors - you can now make horizontal blast doors
- Tweaked pod door code to render under glass window draw layer when open, but on top while closed (I may add this to firedoors too)
- Added Supermatter user manual sprite
- Made engineering storage area overlay sprite transparent
- Fixed a few other mapping errors in the engineering wing