More adjustments. Implemented gas exuding/consumption (currently unused). Implemented cuttings, fixed some issues.
Removing the gaz stuff from botany
Fixes #5839 by making the comb slightly more gender aware.
Fixes #5844 by only having a supermatter explosion affect living entities on the same Z-level.
Recasts objects to avoid usage of :
Is a little convoluted but this removes the last X: use in supermatter.dm
Psychiatrist/Psychologist update.

Conflicts:
	code/game/jobs/job/medical.dm
	icons/mob/uniform.dmi
	icons/obj/clothing/uniforms.dmi
Changed hydro trays, fertilizer and syringes over to use the reagent procs.

Conflicts:
	code/game/machinery/biogenerator.dm
	code/modules/clothing/suits/jobs.dm
	code/modules/reagents/Chemistry-Reagents.dm
	code/modules/reagents/reagent_containers/glass.dm
	maps/tgstation2.dmm
Reapplying some fixes that I think DM may have saved over, whoops.
Adjusted process_reagents() so hydro trays are refillable with water and nurients when the tray is dead/empty.
Adjusted gas exude code.

Conflicts:
	code/game/machinery/hydroponics.dm
Merge pull request #336 from ZomgPonies/master

Patch