Automatically redirect to login when session has expired

[martinkok]

this morning when I wanted to go the the bookmarked url http://floating-sky-3062.herokuapp.com/hourentry/day/24-05-2012 I got
"Unauthorized; You must be authentified to access this page" (assuming authentified is a joke).
I think that in these cases the system should automagically redirect the user to the login-page and after login go to the requested URL.