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/controllers/subsystem/time_track.dm

@@ -0,0 +1,38 @@
+SUBSYSTEM_DEF(time_track)
+	name = "Time Tracking"
+	wait = 600
+	flags = SS_NO_INIT|SS_FIRE_IN_LOBBY|SS_NO_TICK_CHECK
+
+	var/time_dilation_current = 0
+
+	var/time_dilation_avg_fast = 0
+	var/time_dilation_avg = 0
+	var/time_dilation_avg_slow = 0
+
+	var/first_run = TRUE
+
+	var/last_tick_realtime = 0
+	var/last_tick_byond_time = 0
+	var/last_tick_tickcount = 0
+
+/datum/controller/subsystem/time_track/fire()
+
+	var/current_realtime = REALTIMEOFDAY
+	var/current_byondtime = world.time
+	var/current_tickcount = world.time/world.tick_lag
+
+	if (!first_run)
+		var/tick_drift = max(0, (((current_realtime - last_tick_realtime) - (current_byondtime - last_tick_byond_time)) / world.tick_lag))
+
+		time_dilation_current = tick_drift / (current_tickcount - last_tick_tickcount) * 100
+
+		time_dilation_avg_fast = MC_AVERAGE_FAST(time_dilation_avg_fast, time_dilation_current)
+		time_dilation_avg = MC_AVERAGE(time_dilation_avg, time_dilation_avg_fast)
+		time_dilation_avg_slow = MC_AVERAGE_SLOW(time_dilation_avg_slow, time_dilation_avg)
+	else
+		first_run = FALSE
+	last_tick_realtime = current_realtime
+	last_tick_byond_time = current_byondtime
+	last_tick_tickcount = current_tickcount
+
+