The next link should be disabled when on the last page, same as the previous link

The pager test plan (https://wiki.fluidproject.org/display/fluid/Pager+QA+Test+Plan) says:

If on Page 1, the "previous" link should now be disabled, otherwise is should be enabled
If on the last page, the "next" link should now be disabled, otherwise is should be enabled

Right now, both links on the pager demo (demos/pager/) are still clickable and look like enabled even the current page is the first or the last page.