New glasses, new engineering module, bug fixes

Added Kamina's Glasses in a hidden location on the map
Fixed bug with new GLASSES_OVER_HAIR layer that allowed for the overlay to not update when taking off glasses that used the cover.hair variable
Added new Wall-E module for engineering borgs.
Added Lagann Icon
Merge branch 'rei12' of http://github.com/rei1226/vgstation13 into rei12