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/game/objects/items/weapons/storage/secure.dm

@@ -94,7 +94,7 @@
 			else if ((src.code == src.l_code) && (src.l_set == 1))
 				src.locked = 0
 				cut_overlays()
-				add_overlay(image('icons/obj/storage.dmi', icon_opened))
+				add_overlay(icon_opened)
 				src.code = null
 			else
 				src.code = "ERROR"