Area naming consistency

Changes area name from "supply shuttle" to "Supply Shuttle" to match the casing of other areas.
More train fixes

- No passing plastic flaps
- Only human based mobs can board trains
- Adjacent checks for exiting vehicles
- Cleaned up as many direct loc moves as possible
- Places removed cells in the removers hand
Adds a lost AltClick click-through for the AI. Makes it possible to clear a turf alt-leftclick selection.
Bevy of newhydro fixes.

Conflicts:
	code/game/machinery/vending.dm
	code/modules/projectiles/guns/energy/special.dm
	icons/obj/hydroponics.dmi
Fixes some transposed values.
Merge branch 'master' of https://github.com/ZomgPonies/Paradise