Removes ability to duplicate posts
Fixes broken test
Merge pull request #92 from MarcGarreau/deduping

Deduping
Adds basic user profiles
More universal language
Merge pull request #97 from MarcGarreau/user_profile

User profile
Adds memcached to posts
Merge pull request #99 from MarcGarreau/memcached

Adds memcached to posts
fixes merge conflict in routes and _post_feed