LDEV-1112: Login was always going to the index page, and not straight to the lesson page for the launch lesson url. The JspRedirectStrategy code was forcing it to the index page. Now it lets it go to whatever page was requested initially for "normal" requests.
Had to change HomeAction to go to the index page, rather than direct to the login page as to make the change to JspRedirectStrategy - otherwise it would try to go to the login page straight after the login page!