Code cleanup

DEB-0000 code cleanup auth store + session timeout - that is handled by SessionListener.

DEB-0000 code cleanup Removed userCategory/categoryCode

Was not used, and this was the last thing to remove in order to skip the auth reducer/state.

DEB-0000 code cleanup - fixed ReservationContainer+forms

-removed ReservationContainer::getDerivedStateFromProps, had no relvance any longer.
-removed unused isLoggedIn flag on forms - they were not even used in the old repo code.

DEB-0000 code cleanup - fixed Nav

Auth does not come from state anymore.

DEB-0000 code cleanup - fixed borrower name on min-side

Was not displaying before.

DEB-0000 code cleanup - removed welcome page+idporten store

DEB-0000 code cleanup - removed selvreg

Was taken over by Keycloak