got description in add_entries
Changed FeedEntry to BlogEntry; made it so that user only sees user's own feed not all feeds
Fixes blog entries controller so that it doesn't return error if no one's signed in.
broke all the tests
slight refactor of blogs controller, updated tests
minor change to user_adds_feed spec
refactored user_sees_user_feed spec
Changed feed_entry to blog_entry
 added category stuff
files merged
merged with master
categories merged with master