Added session and user controllers
Added #new for session to fix route issue
Changes controller names appropriately
Changed routes for sessions
Successful login and login form
Signup and logout functional, fixed some redirecting issues in user controller
Added signup route to replace /users/new
Added sign up, log in, and log out links to navbar
fix conflicts
Merge pull request #24 from ospreys-2014/user_signup_login_bex

User signup login bex