Implement logout
Allow logout in nav & display current user
Show failed login attempts
Create pages for registering users
Create views for managing alerts and registering
Enable class data to be stored in user models

This data is used on the browse and alerts page.
Make username smaller in nave column
Allow to add/remove classes from users alerts
Add button to login page to redirect to reg page
Update alerts page
Make pages a little more responsive for mobile
Merge pull request #5 from theMagicalKarp/auth-clean-up

Auth clean up & more intricate Alert page!