WP-2622: export ds settings to feature.
WP-2622: ds settings and export field groups.
WP-2622: add wrapper settings.
WP-2622: Add hook_field_extra_fields() for faculty author.
WP-2622: Sort authors in correct order.
WP-2622: Add "Faculty Authors" label.
WP-2622: Add gsb_feature_book_ct_faculty_authors to exported field instance settings.
WP-2622: Add DS settings for field_authors.