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/projectiles/guns/energy/lawgiver.dm

@@ -117,6 +117,9 @@
 		..()
 
 /obj/item/weapon/gun/energy/lawgiver/hear_talk(mob/living/M in range(0,src), msg)
+	var/mob/living/carbon/human/H = M
+	if (!H)
+		return
 	if( (src.dna==usr.dna.unique_enzymes || emagged) && (src in usr.contents))
 		hear(msg)
 	return