add new user signup page
added validation test for users
add integration testing for sign up
add more integration testing for logging in
add question associations with testing
add new question page
add question show page
add associations between users, questions, answers, and begin AJAX on answers
add AJAX functionality to adding answers
add ability to choose best answer for a question
put best answer on top of list
add some work on getting AJAX working for authorized users to mark an answer as BEST