WP-2317 Initial commit for the featured person fpp
WP-2317 Changed to user field_person_fac_single_ref
WP-2317 Make the person ref field required
WP-2317 Changed to use entityreference_entity_id for the person ref
Merge branch 'WP-2317' of github.com:gsbitse/gsb_feature_featured_person_fpp into WP-2317
WP-2370: preliminary metadata wrappers.
WP-2370: Handle all 4 people types.
Update the person field.