Adds new_prepare.bat

Fancy map backups now with 150% more choices
Adds new_clean.bat

Fancy map cleaner now with 150% more FANCY.

Essentially:
Asks you which map to clean out of ../maps/
Yells at you if the map isn't backed up
Yells at you if what you chose isn't actually a map
Runs the MapPatcher.jar thing
Merge pull request #3167 from Kilakk/bleeding-edge-freeze

Adds fancy batch files for preparemap and cleanmap in maptools
Medbay Fixes for #3160 & Other

Removes airless tiles, fixes up CMO office, adds lights to viro
corridor, moves a couple holopads in medbay around.
Sets Bar East camera to correct network (SS13), Moves redundant security
holopad.
Merge pull request #3170 from Vetinarix/bleeding-edge-freeze

Medbay Fixes for #3160 & Other
Merge branch 'bleeding-edge-freeze' of https://github.com/Baystation12/Baystation12 into bleeding-edge-freeze