Following a discussion with Tomaz we aggreed to:
- 'bookmark' button label => 'Add to my list'
- Hubs need to have a link to their front page
- Visit Site button link should open a new window
- Add a button similar to 'Download', 'Visit site'... for 'Rate and comment' (or a link). This should display the course on the hub. On the hub course listing, if not logged a button should appear 'Rate and comment'.