Add a closing <div> to the "collapse navbar-collapse" div and remove the extra "navbar-collapse".
Fix dev sidebar.
Add buttons on navbar for login and sign up pages.
Create Authentication controller with login and sign up actions and
views.
Combine tests for sign up and login links.

Combine TestThatIndexPageContainsSignUp and
TestThatIndexPageContainsLogin into
TestThatIndexPageContainsAuthenticationLinks().
Make "Home" in the navbar not active.
Add user authentication. Closes #1.
Merge pull request #2 from hackedu/authentication

Add user authentication. Closes #1.