user table creation
User controller and view for sign up action
Session controller for login and email verification.
assets for session controller and user controller
flash notice is moved to layout
individual flash section is removed
User model and its  specs.(all green)
custome routs are created for sign_up, log_in and email verification 
added resources routes for users and sessions
before_filter added for authentication and admin authorization
skipped before filter in sessions controller and users controller
redirecting to home if a survey is already answered by the loged in user
associating user with responses
Link to answer surveys from home page survey list
Navigation links and login/logout links
Button caption changes and back button target changes
Showing user responses with each survey
showing answers with question after submitting a survey response to the user
added home_path in routes