Link topic title to unread post instead of first post

RFC: http://area51.phpbb.com/phpBB/viewtopic.php?f=108&t=44825

Link to unread post is very small and is impossible to click on touch screen devices. Making it bigger will mess up layout.

I suggest to change topic link for registered users to first unread link when there are unread topics in thread. Users rarely need to see first post when visiting thread, they want to see new posts.

First post time below topic title can be used as link to first post for people who need to see first post.