Readjusted kepori whistle and click volume (shiptest-ss13#3126)

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Readjusted kepori whistle and click volume. Whistle also now varies in
pitch.

Less ear bleed

:cl:
fix: Dialed down the loudness of a couple Kepori sounds
fix: Kepori wooping now has the audible flag.
fix: Whistling now varies in pitch
/:cl:

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code/modules/mob/living/carbon/human/emote.dm

@@ -384,6 +384,7 @@
 	key_third_person = "whistles"
 	message = "whistles!"
 	emote_type = EMOTE_AUDIBLE
+	vary = TRUE
 
 /datum/emote/living/carbon/human/kepiwhistle/get_sound(mob/living/user)
 	if(!ishuman(user))
@@ -395,3 +396,4 @@
 	key = "woop"
 	key_third_person = "woops"
 	message = "woops!"
+	emote_type = EMOTE_AUDIBLE