Anti-Littering Initiative II

See https://github.com/Spoffy/LLA-Station-13/pull/140
This is the cleaned up version.

Piping under doors is fine, didn't mess up with git like I did last time. Everything is mapmerged properly.
Bins all work. All of them send items put in them to the sorting room (except the one in testing area which sends to space). None of them spit out things when an items is passed though the loop.