Add fields for course ct.
WP-2622: Update book-related base fields.
WP-2638 Added new non-course fields
Book CT: Change Attachments multivalued link field to URL or PDF field collection. Add Centers term reference field.
WP-2684: add book teaser settings.
Update base fields for gsb_feature_book_ct.
Add a couple of fields.
Add link attachments field.
WP-2568: Add book title and book month/day fields. Get rid of old unused publication fields.
WP-2637 Added new field field_featured_publication_ref used in Faculty ct
WP-2761: Change Month/Day date field to separate integer fields.