moved readTime function to be used globally, added timeRequired to json-ld
moved readTime function to be used globally, added timeRequired to json-ld

msulibrary/bib-template-fiction,msulibrary/bib-template-fiction,msulibrary/bib-template-textbook,msulibrary/bib-template-textbook,msulibrary/bib-template-fiction,msulibrary/bib-template-textbook