issue 3115: fix for breadcrumb logic loading and 'executing' all the par...

#3115: Fix for breadcrumb logic loading and 'executing' all the parent pages. By setting the $simple_return parameter of the get_by_uri method, the actual loading bit of the page data is skipped which is not a problem since the breadcrumb logic only need the page title and URI which are both part of the basic page information.