modified template files
configured authentication system
cleaned up files
updated user model
added presence validators
added tests for users to validate uniqueness
styled and refactored flash messages
defined custom routes for authentication and newsfeed
added integration tests
added validators to the user and status model
fixed bugs related to user profile validation
added user profile page which displays status updates
implemented gravatar via email hashing for profile pictures
moved sqlite3 to development and test environment
added pg to production environment
updated gemfile.lock
precompiled assets
scoped status updates to current user
added a user friendship model
created friendship controller