[MAP] Air/Airless Cleanup

-Fixes aired/airless turf mixing -- Most at the mining asteroid alien base, and a few stray tiles at the derelict and telecomms satellite.
-The little hydroponics room in the mining asteroid has its hydroponics trays removed. Instead, there's a sandstone stack for making dirt growing trays, along with some extra botany supplies.

-Adds a damp rag to the bar, and a blender to hydroponics, in line with the metastation equivalent.
Further cleanup of aired/airless mixing turfs. Down to 0 active turfs at roundstart. :3

-Adds 1 airlock painter to art storage, and 1 to engineering.
Merge pull request #1165 from Cheridan/Map

[MAP] Air/Airless Cleanup