April sync (#360)

* Maps and things no code/icons

* helpers defines globalvars

* Onclick world.dm orphaned_procs

* subsystems

Round vote and shuttle autocall done here too

* datums

* Game folder

* Admin - chatter modules

* clothing - mining

* modular computers - zambies

* client

* mob level 1

* mob stage 2 + simple_animal

* silicons n brains

* mob stage 3 + Alien/Monkey

* human mobs

* icons updated

* some sounds

* emitter y u no commit

* update tgstation.dme

* compile fixes

* travis fixes

Also removes Fast digest mode, because reasons.

* tweaks for travis Mentors are broke again

Also fixes Sizeray guns

* oxygen loss fix for vore code.

* removes unused code

* some code updates

* bulk fixes

* further fixes

* outside things

* whoops.

* Maint bar ported

* GLOBs.

code/game/objects/structures/transit_tubes/transit_tube.dm

@@ -129,7 +129,7 @@
 
 /obj/structure/transit_tube/proc/generate_tube_overlays()
 	for(var/direction in tube_dirs)
-		if(direction in diagonals)
+		if(direction in GLOB.diagonals)
 			if(direction & NORTH)
 				create_tube_overlay(direction ^ 3, NORTH)