Pipe tweaks

- updated update_icon() for pipes and manifolds to change the color instead of the sprite
- updated subtypes to use global defines for colors instead of hard coded html refs
- added an alpha tweak to hidden pipes for the sake of mapping (DM doesn't render semi-transparent icons correctly, but it does handle var/alpha tweaks) - this is overridden when the pipe is spawned in the game world with New()
(Thinking about it, we could potentially do away with the transparent pipe sprites by just using the alpha variable. May do this later.)
- fixed pipe painter
- unwrenched pipes now inherit their source pipe color, and also inherit it when reattached to a pipe network again
Map fixes

- Fixed lighting issues in dorms (added APC to bedroom area, also gave cryo storage and dorm bedrooms their own area subtypes so light switches don't conflict anymore)
- Fixed 0-2 cable "pixel_y = 1" offset (it was making a 1 pixel gap between south-to-end cables on the map)
- Replaced research outpost piping with new subtypes
- Fixed a broken air supply pipe running to the research outpost auxiliary storage area
- Replaced a few plating turfs in space with airless platings
Pipe painter bad-fix revert

Oops. Thanks Segrain.
Map fix

- Added an extended capacity emergency tank to the CE's locker
Closet fixes

- Fixed a few closets not adding items to their contents at round start (wardrobes have the same issue, but I've already fixed them on master)
Merge pull request #4462 from Loganbacca/freezefix

Dev-freeze fixes