Megaphone no longer have special say code to handle their effect.

The megaphone is no longer used by clicking it and entering a message, you simply keep it in your active hand and talk normally.
Remove the insults feature of the emagged megaphone. The span of the emagged megaphone is now big and red.

code/modules/mob/living/carbon/say.dm

@@ -24,3 +24,7 @@
 	var/obj/item/organ/tongue/T = getorganslot("tongue")
 	if(T)
 		. |= T.get_spans()
+
+	var/obj/item/I = get_active_held_item()
+	if(I)
+		. |= I.get_held_item_speechspans(src)

code/modules/mob/living/say.dm

@@ -92,11 +92,12 @@ var/list/crit_allowed_modes = list(MODE_WHISPER,MODE_CHANGELING,MODE_ALIEN)
 
 	if(message_mode != MODE_WHISPER) //whisper() calls treat_message(); double process results in "hisspering"
 		message = treat_message(message)
-	spans += get_spans()
 
 	if(!message)
 		return
 
+	spans += get_spans()
+
 	//Log of what we've said, plain message, no spans or junk
 	say_log += message