Simplified the User.subscribe method. Moved the code that fetches and subscribes to the feed if it's not yet in the database to a new private method, User.subscribe_new_feed.
Simplified the User.subscribe method. Moved the code that fetches and subscribes to the feed if it's not yet in the database to a new private method, User.subscribe_new_feed.

amatriain/feedbunch,jmwenda/feedbunch,amatriain/feedbunch,jmwenda/feedbunch,amatriain/feedbunch,jmwenda/feedbunch,amatriain/feedbunch