don't re-download twitter user pics if they didn't change, fixes #229
don't re-download twitter user pics if they didn't change, fixes #229

LockerProject/Locker,Singly/hallway,quartzjer/Locker,Singly/hallway,quartzjer/Locker,othiym23/locker,quartzjer/Locker,LockerProject/Locker,quartzjer/Locker,LockerProject/Locker,LockerProject/Locker,othiym23/locker,LockerProject/Locker,othiym23/locker,othiym23/locker,quartzjer/Locker,othiym23/locker