Fix OAuth scopes string
Fix OAuth scopes string

"subscribe" was delclared twice in this string, causing an invalid scope error between local copy of reddit-mobile and reddit.com
uzi/reddit-mobile,uzi/reddit-mobile,madbook/reddit-mobile,DogPawHat/reddit-mobile,madbook/reddit-mobile,uzi/reddit-mobile,DogPawHat/reddit-mobile,madbook/reddit-mobile