Adds Automuting

Adds a system adapted from Aurora that will automatically mute someone if they say things too quickly in IC, OOC, Deadchat, Ahelp, or Pray.

code/modules/admin/verbs/adminhelp.dm

@@ -17,6 +17,8 @@ var/list/adminhelp_ignored_words = list("unknown","the","a","an","of","monkey","
 
 	adminhelped = 1 //Determines if they get the message to reply by clicking the name.
 
+	handle_spam_prevention(MUTE_ADMINHELP)
+
 	//clean the input msg
 	if(!msg)
 		return