ANDROID-2308 : Rewording comments and renaming exception class to more closely reflect reality

Change-Id: I634e43f37fd4e9aa6c56e0d375d5436e623a5203
ANDROID-2313. Made unauthenticated GETs non-redirecting

Change-Id: Id1db98881e0166fb7fbe873febd18b342aff0bee