WP-3122: Add validation for field authors.
WP-2558: Add field_date and field_icon used in Media Item.
WP-3127: Add submit field.
WP-3111: Book PDF should not use media center.
WP-3140: Make url field under conferences and presentations optional.
WP-3215: Move field_author specific code to gsb_field_authors.
WP-3013 Making faculty the default option selected for field_authors
WP-3013 Adding field_research_databases
WP-3267: Add additional fields for some pre-work on faculty.
Move field collection instances from faculty_ct to base_fields.