In this demo example, gallery is one of the applications that do not have the custom image header enabled. To override this template, copy the view.main.template.php, item.template.php and category.nested.template.php to the /web/{subsitename}themes/apps/gallery folder. Try adding the breadcrumb to the gallery template files (view.item, view.category.nested, and view.main) as an exercise.
Note: the Frontpage Slideshow and Testimonials categories are not being shown in this gallery main page since the non-public option [This gallery category is not visible to the public regardless of its permission] has been selected.
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