Openturf tweaks & SSmob sleep detection (#2341)

changes:

Openturfs no longer copy the below turf's name.
Openturfs' desc now lists the name of the below turf instead of copying the below turf's desc.
SSmob now detects sleeping Life() procs.

code/controllers/subsystems/mob.dm

@@ -5,6 +5,8 @@
 	flags = SS_NO_INIT
 	priority = SS_PRIORITY_MOB
 
+	var/list/slept = list()
+
 	var/list/currentrun = list()
 	var/list/all_mice = list()	// Contains all *living* mice.
 
@@ -35,7 +37,14 @@
 				return
 			continue
 
+		var/time = world.time
+
 		M.Life()
 
+		if (time != world.time && !slept[M.type])
+			slept[M.type] = TRUE
+			var/diff = world.time - time
+			log_debug("SSmob: Type '[M.type]' slept for [diff] ds in Life()! Suppressing further warnings.")
+
 		if (MC_TICK_CHECK)
 			return

code/controllers/subsystems/openturf.dm

@@ -93,6 +93,8 @@
 
 		// Update the openturf itself.
 		T.appearance = T.below
+		T.name = initial(T.name)
+		T.desc = "Below seems to be \a [T.below]."
 
 		// Handle space parallax & starlight.
 		if (T.is_above_space())