Makes Icon Scaling Great

Scaling wasn't great before so no Again.
Makes most icons not get blurry when scaled.
Makes all /atom/movable s able to be scaled with the adjust_scale() proc.
Adds ability for species to get scaled automatically.  Currently no species does this, but it is an option in the future.
Adds four traits to adjust your mob scale.  It is purely cosmetic at this time.

code/modules/mob/_modifiers/modifiers.dm

@@ -41,6 +41,7 @@
 	var/accuracy						// Positive numbers makes hitting things with guns easier, negatives make it harder.  Each point makes it 15% easier or harder, just like evasion.
 	var/accuracy_dispersion				// Positive numbers make gun firing cover a wider tile range, and therefore more inaccurate.  Negatives help negate dispersion penalties.
 	var/metabolism_percent				// Adjusts the mob's metabolic rate, which affects reagent processing.  Won't affect mobs without reagent processing.
+	var/icon_scale_percent				// Makes the holder's icon get scaled up or down.
 
 /datum/modifier/New(var/new_holder, var/new_origin)
 	holder = new_holder
@@ -62,6 +63,8 @@
 	holder.modifiers.Remove(src)
 	if(mob_overlay_state) // We do this after removing ourselves from the list so that the overlay won't remain.
 		holder.update_modifier_visuals()
+	if(icon_scale_percent) // Correct the scaling.
+		holder.update_transform()
 	qdel(src)
 
 // Override this for special effects when it gets removed.
@@ -117,6 +120,8 @@
 	modifiers.Add(mod)
 	if(mod.mob_overlay_state)
 		update_modifier_visuals()
+	if(mod.icon_scale_percent)
+		update_transform()
 
 	return mod
 
@@ -198,6 +203,8 @@
 		effects += "Your metabolism is [metabolism_percent > 1.0 ? "faster" : "slower"], \
 		causing reagents in your body to process, and hunger to occur [multipler_to_percentage(metabolism_percent, TRUE)] [metabolism_percent > 1.0 ? "faster" : "slower"]."
 
+	if(!isnull(icon_scale_percent))
+		effects += "Your appearance is [multipler_to_percentage(icon_scale_percent, TRUE)] [icon_scale_percent > 1 ? "larger" : "smaller"]."
 
 	return jointext(effects, "<br>")
 

code/modules/mob/_modifiers/traits.dm

@@ -58,4 +58,28 @@
 	desc = "Your body's metabolism is slower than average."
 
 	metabolism_percent = 0.5
-	incoming_healing_percent = 0.6
+	incoming_healing_percent = 0.6
+
+/datum/modifier/trait/larger
+	name = "Larger"
+	desc = "Your body is larger than average."
+
+	icon_scale_percent = 1.2
+
+/datum/modifier/trait/large
+	name = "Large"
+	desc = "Your body is a bit larger than average."
+
+	icon_scale_percent = 1.1
+
+/datum/modifier/trait/small
+	name = "Small"
+	desc = "Your body is a bit smaller than average."
+
+	icon_scale_percent = 0.95
+
+/datum/modifier/trait/smaller
+	name = "Smaller"
+	desc = "Your body is smaller than average."
+
+	icon_scale_percent = 0.9