version 1.1 improves bolding of unread topic titles by making it a separate function, and prevents mark topic read link from appearing in subscriptions/favorites pages

git-svn-id: https://plugins.svn.wordpress.org/bbpress-go-to-first-unread-post/trunk@905202 b8457f37-d9ea-0310-8a92-e5e31aec5664