Fix permission checks for %y and %z requests.
Fix permission checks for %y and %z requests.

ohAitch/arvo,joemfb/arvo,cgyarvin/arvo,joemfb/arvo,ngzax/urbit,urbit/urbit,ngzax/urbit,belisarius222/arvo,ngzax/urbit,urbit/urbit,jfranklin9000/urbit,urbit/urbit,ngzax/urbit,urbit/urbit,cgyarvin/arvo,urbit/urbit,jfranklin9000/urbit,jfranklin9000/urbit,jfranklin9000/urbit,jfranklin9000/urbit,jfranklin9000/urbit,belisarius222/arvo,ngzax/urbit,ngzax/urbit,ohAitch/arvo,jfranklin9000/urbit,urbit/urbit,ngzax/urbit,urbit/urbit