Small fixes to Boxstation

• Replace a bunch of light bulbs in shuttles for light tubes. Added lighting to the Salvage Shuttle (it will get destroyed by the spiders immediately, but at least once the ship is clear you'll be able to light it). You should now be able to see correctly on all shuttles unless lights were broken
• Hollowed out Arrivals Shuttle Bridge to make the lighting here not shit
• Fixes vgstation/vgstation#174, the intercoms are now on the bottom walls since they are intended for use outside of the cells
• Fixes vgstation/vgstation#165, moved the light one tile down, tweaked the cable leading to the APC a bit while at it
• Fixes vgstation/vgstation#76, removed the offending firelocks

Nothing else to report, I want to get map fixes out of the way first before doing functional changes