Description of problem: Make History UI work
So, what's in order here? Rafi, what is the base functionality you think is required from this UI, and where does it stand?
I'd look at aplaws-demo.redhat.com for starters. Basic requirements are: 1. Display a list of all tagged versions of the content item. 2. Click on a specific version to get a "what's changed" message. 3. Preview of older content items. 4. Rollback.