Makes the medHUD smoother.

It now has more stages, giving the viewer a little more detail about how badly you're doing.
Port of https://github.com/ParadiseSS13/Paradise/pull/4726.

code/_helpers/mobs.dm

@@ -119,27 +119,43 @@ proc/age2agedescription(age)
 		if(70 to INFINITY)	return "elderly"
 		else				return "unknown"
 
-proc/RoundHealth(health)
+/proc/RoundHealth(health)
 	switch(health)
 		if(100 to INFINITY)
 			return "health100"
-		if(70 to 100)
-			return "health80"
-		if(50 to 70)
-			return "health60"
-		if(30 to 50)
-			return "health40"
-		if(18 to 30)
-			return "health25"
-		if(5 to 18)
-			return "health10"
-		if(1 to 5)
+		if(93 to 100)
+			return "health93"
+		if(86 to 93)
+			return "health86"
+		if(78 to 86)
+			return "health78"
+		if(71 to 78)
+			return "health71"
+		if(64 to 71)
+			return "health64"
+		if(56 to 64)
+			return "health56"
+		if(49 to 56)
+			return "health49"
+		if(42 to 49)
+			return "health42"
+		if(35 to 42)
+			return "health35"
+		if(28 to 35)
+			return "health28"
+		if(21 to 28)
+			return "health21"
+		if(14 to 21)
+			return "health14"
+		if(7 to 14)
+			return "health7"
+		if(1 to 7)
 			return "health1"
-		if(-50 to 0)
+		if(-50 to 1)
 			return "health0"
-		if(-80 to 50)
+		if(-85 to -50)
 			return "health-50"
-		if(-99 to 80)
+		if(-99 to -85)
 			return "health-85"
 		else
 			return "health-100"