Re-introducing IratePirate's PR

Since IratePirate's PR has reached a block, I'm redoing the most
common-sense changes and including an extra thing or two :

- Add in missing cameras to latest changes. I hope I got them all
- Fix broken conveyor belt corner in Cargo
- Fix some of the wires and pipes under walls, notably near Cargo and by
the vending machines near HoP Office
- Switch the General Fabricator windoor so that Mechanics get to control
who accesses it, but can still make it public at a moment's notice
- Add Air Alarm to Viro Access
- Added in some reinforced tables to Perma to make prisoner escape a bit
harder. You can no longer pillage Execution and unless someone snuck in
a welder you won't be able to pull off the Perma hallway strategy since
reinforced tables are now in the way. Pull something more intricate or
serve your sentence
Merge pull request #1893 from dylanstrategie/Mapping

Re-introducing IratePirate's PR