Add some indication that Celestial rank is required to rent a Storefront

According to the Oakhaven release post, you need Celestial rank to rent a storefront, but I'm not sure if this is indicated anywhere in-game. I don't think the realms tutorial mentioned this being a rank perk. In addition, if you interact with the NPC, and try to buy a vacant storefront, it gives the vague message "You do not have permission to rent Storefronts." It would be good if it specifically said somewhere that you need Celestial rank for this. Maybe when hovering over a Storefront that is for rent.