LDEV-5094 Redirect authenticated user immediatelyDetect situation when user is automatically reauthenticating viaintegrations and redirect him straight to the desired URL, so thedefault servlet does not kick in.
LDEV-5094 Store redriectURL in session rather than URL paramIn case an user click Back, the redirectURL is still in session andlogin.jsp can pick it up and send to j_security_check.