CE-2714: Fix token revocation

Calling the Ping logout url by redirecting the FE to the logout page.

@anderslindh1 The token is being revoked, but the UI stays at the Ping logout page. Seems the Ping is not handling the logout redirect_url that we provide during the logout workflow. Should we merge this modification only after the redirect url is fixed and the FE is giving this parameter to the BE (last visited page url)?