Increases some stat defaults for hydroponics plants. Allows banana potency to be set. Better documentation of variables.
drying rack as smartfridge

Converts the drying rack into a smart fridge, allowing for better usability (can now batch-dry), code cleanliness and reuse.
Merge branch 'master' of https://github.com/tgstation/-tg-station into hydro

Conflicts:
	code/game/machinery/drying_rack.dm
Removes drying_rack.dm
Merge pull request #2836 from Cheridan/hydro

Drying Rack as smartfridge