Enable automatic redirect to login.jsp on session expiration

Currently, upon session expiration the nuxeo-expired-session banner is displayed allowing users to navigate back to login.jsp for reauthentication.

This presents a risk of post-login information continuing to be present on the screen while the session is expired (e.g. at a machine left idle). To counteract this, a redirect can be automatically made upon session expiration that navigates immediately to login.jsp without the user needing to click into the expired session banner.