Create login.html
Merge branch 'feature_register' into feature_login
Let user log in
Deny user access if not yet registered
Refer to correct register page
Merge branch 'feature_login' into dev
Fix: Make websites actually available via url
Fix: Register page refers to login page
Enable user to log out
Merge branch 'feature_logout' into dev
Merge branch 'dev'
Add ROOT.war as necessary for the lecture