Make sure safari uses the correct color for disabled inputs
Show different navigation when logged out
Renamed login.css to authentication.css

This is included on a page with both a login and a register form so it
should be named appropriately
Renamed login.html to authentication.html

This page contains both a login and a register form so it should be
named after that
Renamed LoginView to AuthenticationView
Fixed some inconsistencies with inherited styles
Fixed incorrect url in navigation