Fix authentication with multiple realms. (#20)
Fix authentication with multiple realms. (#20)

When using multiple authentication realms and therefore
Authentication::userInRealm() instead of Authentication::userExists(),
the authentication check fails in Authentication::userInRealm() because
no realm name hase been set.
simonaw/cutelyst,cutelyst/cutelyst,cutelyst/cutelyst,cutelyst/cutelyst,buschmann23/cutelyst,buschmann23/cutelyst,buschmann23/cutelyst,simonaw/cutelyst