Update to yii2 2.0.0 vendor libraries plus the additional changes to the advanced app; basic flow with user login/logout/sign in/password reset and roles should work now; pnauw specific code not reviewed/tested yet!
Update to yii2 2.0.0: Date Formatter is now used and needs to be configured centrally; Date must be null and not empty
Update to yii2 2.0.0: Collapse now uses "label" (forgotten in previous commits)