Misc fixes (#1370)

changes:

bugfix: "Fixed formatting of forms when held up to a security camera."
spellcheck: "Fixed grammar error in IA and CE's headsets."
Fixes #1196.
Fixes #1358.
Fixes #1376.
Fixes #1347.
Replaces some BYOND text macros with spans.

Issues:

M'sai's preview image does not work (missing image).

code/game/objects/effects/spiders.dm

@@ -199,7 +199,7 @@
 			var/target_atom = pick(nearby)
 			walk_to(src, target_atom, 5)
 			if(prob(25))
-				src.visible_message("\blue \the [src] skitters[pick(" away"," around","")].")
+				src.visible_message(span("notice", "\the [src] skitters[pick(" away"," around","")]."))
 	else if(prob(5))
 		//vent crawl!
 		for(var/obj/machinery/atmospherics/unary/vent_pump/v in view(7,src))
@@ -209,7 +209,7 @@
 				break
 
 	if(prob(1))
-		src.visible_message("\blue \the [src] chitters.")
+		src.visible_message(span("notice", "\the [src] chitters."))
 	if(isturf(loc) && amount_grown > 0)
 		amount_grown += (rand(0,2)*growth_rate)
 		if(amount_grown >= 100)