Add .ruby-gemset, .ruby-version to lock in the ruby version and gemset n...

Add .ruby-gemset, .ruby-version to lock in the ruby version and gemset names.
Uncomment link_to(burl) so that /bookmarks makes some sense again.
Add a filter to make sure a user is logged_in before allowing the user to visit /mybookmarks.
Fix route file from authenticated user to authenticate user. <- This totally fixed the login redirect.