We keep the login state in the session storage and force a login in case the user was
logged in before.

This means a page refresh will try to restore the login state (which usually should mean
that it just flashes becasue of redirects). And new visitors get the logged out state by default.

Bekerle, Patrizio authored 5 years ago and Reiter, Christoph committed 4 years ago

# Conflicts:
#	vpu-auth.js