Links to our comparison and industry pages now show the right preview

When someone shared a link to one of Seascape's comparison pages or its pages for each kind of operator, the preview showed the homepage instead. Each of those pages now shows its own title and picture.

Comparison pages — a link to a page like Seascape compared with FareHarbor now shows that page's name and our comparison picture.
Pages for each kind of operator — dive shops, snorkel tours, catamaran charters, cave tubing, dive courses and island tours each have their own picture.
Blog posts — a post with no cover photo now shows the blog's picture rather than the homepage's.