Replaces /image with /mutable_appearance (#556)

* Replaces /image with /mutable_appearance, where appropriate

* Update miscellaneous.dm

* Delete miscellaneous.dm.rej

* Delete pet.dm.rej

* Update pet.dm

* Update species.dm

* Update miscellaneous.dm

* Update species.dm

* Update miscellaneous.dm

* Delete species.dm.rej

* Update species.dm

pretty sure I got all the indentation correct THIS time, ffs

* Update species.dm

* Update species.dm

fucking tabs man, fucking tabs.

code/modules/station_goals/bsa.dm

@@ -127,7 +127,7 @@
 	icon = 'icons/obj/lavaland/cannon.dmi'
 	icon_state = "orbital_cannon1"
 	unsecuring_tool = null
-	var/static/image/top_layer = null
+	var/static/mutable_appearance/top_layer
 	var/ex_power = 3
 	var/power_used_per_shot = 2000000 //enough to kil standard apc - todo : make this use wires instead and scale explosion power with it
 	var/ready
@@ -163,17 +163,16 @@
 
 /obj/machinery/bsa/full/New(loc,cannon_direction = WEST)
 	..()
+	top_layer = top_layer || mutable_appearance(icon, layer = ABOVE_MOB_LAYER)
 	switch(cannon_direction)
 		if(WEST)
 			dir = WEST
 			pixel_x = -192
-			top_layer = image("icons/obj/lavaland/orbital_cannon.dmi", "top_west")
-			top_layer.layer = ABOVE_MOB_LAYER
+			top_layer.icon_state = "top_west"
 			icon_state = "cannon_west"
 		if(EAST)
 			dir = EAST
-			top_layer = image("icons/obj/lavaland/orbital_cannon.dmi", "top_east")
-			top_layer.layer = ABOVE_MOB_LAYER
+			top_layer.icon_state = "top_east"
 			icon_state = "cannon_east"
 	add_overlay(top_layer)
 	reload()