Add authentication to homepage, and allow sign in on sign up
Filter user-generated questions
Refactor authentication, and random test
Track user answers
Filter out answered questions
Refactor question model
Basic style
Style no more questions page
Add user profile and score
Add user profile styles
Add stats page, and number of questions
Add preliminary stats styles
Add hardest question stat
Add easiest question stat and styles therefore
Add user scores table to stats
Add flash style
Cleaned up outstanding commits