Cosmetic alterations for featured items

To save confusion I have added headers to the featured items on the
homepage as well as the browse page, I have also added a new header ALL ITEMS
on the browse page.

index.php has had code added to only display the featured part if
featured items exist so the header is not always present.

There are many posts on the forum where people and their users are confused by items showing twice, something I fixed in my SP1 release but that got pulled out again