Updates a custom item sprite and adds 2 approved custom items

http://baystation12.net/forums/viewtopic.php?f=33&t=10678 for Gvazda's item sprite update. 
http://baystation12.net/forums/viewtopic.php?f=33&t=10693 for Teslabot's items.

Paths to new files are:
/obj/item/weapon/lighter/zippo/fluff/isaac_jachym
/obj/item/clothing/shoes/jackboots/fluff/kecer_eldraran