Miscellaneous Fixes & Tweaks (#1504)

changes:

tweak: "Auto-Hiss should no longer act on sign languages."
tweak: "Auto-Hiss should no longer act on Tajaran languages."
tweak: "Auto-Hiss should no longer act on Unathi languages."
tweak: "Examining an IPC no longer checks their non-existent pulse."
tweak: "You can no longer check the pulse of a species that does not have one."
bugfix: "Examining a human-type mob with robotic limbs no longer shows red examine text for each limb."
bugfix: "Examining a human-type mob now shows hunger level again."
bugfix: "The Ninja's self-destruct should actually kill the Ninja now."
bugfix: "You can no longer use sign language over radios."
Changes not in changelog:

Cleaned up the BST's code a bit.
BSTs now understand/speak the newly added languages
Added #define for languages that did not have them.
BSTs now understand/speak Vaurca Hivenet.
Slightly tweaked names/descriptions of BST items.
Fixed runtime from lawgivers overhearing speech from non-human mobs.
Fixes #1492
Fixes #1500
Fixes #1505

code/modules/mob/language/monkey.dm

@@ -1,5 +1,5 @@
 /datum/language/human/monkey
-	name = "Chimpanzee"
+	name = LANGUAGE_CHIMPANZEE
 	desc = "Ook ook ook."
 	speech_verb = "chimpers"
 	ask_verb = "chimpers"
@@ -7,22 +7,22 @@
 	key = "6"
 
 /datum/language/skrell/monkey
-	name = "Neaera"
+	name = LANGUAGE_NEAERA
 	desc = "Squik squik squik."
 	key = "8"
 
 /datum/language/unathi/monkey
-	name = "Stok"
+	name = LANGUAGE_STOK
 	desc = "Hiss hiss hiss."
 	key = "7"
 
 /datum/language/tajaran/monkey
-	name = "Farwa"
+	name = LANGUAGE_FARWA
 	desc = "Meow meow meow."
 	key = "^"
 
 /datum/language/bug/monkey
-	name = "V'krexi"
+	name = LANGUAGE_BUG
 	desc = "Buzz buzz buzz."
 	key = "#"
 	speech_verb = "chitters"