Merge pull request #8 from zacholauson/before_filters

changed before_action to before_filter
added header to application layout
changed before filter on create to new
added create user form
added login form
fixed redirect in question controller
made h1 clickable
made questions clickable on index
added view for individual questions
added validation for uniqueness of question tag pair
added tag display on question
Merge pull request #9 from zacholauson/views

Views
added answer for to question view
setup answer views and creation for questions
Merge pull request #10 from zacholauson/views

Views for answers
added comments display and link to questions and answers
added new comment form and new method in comment controller
wrote integration tests for user on homepage
Merge pull request #11 from zacholauson/integration_test_1

User on Homepage Integration Tests
added create method for comments