Cleans up computer code severely.

 fixes issue #1004. Aliens and Monkeys can now smash computers. However, this only applies to computers with buildable circuit boards. Computers without boards are now impervious to attack and deconstruction(can't steal atmos computers or slash up the escape shuttle computer).

Station Alert computers can be researched and built.

Fixes issue #1352 by making broken cameras and computers print to the runtime log their locations. Also, allow the computer to ignore those "broken" cameras and still generate the list.

Hologram computer has been moved to unused. It has some interesting ideas, but it needs sprites and fix up.