Revert "WP-3050: Remove field_person_field_visibility from field collection."

This reverts commit b7d60813c5cc763d90cea7f426f204375360830c.
Revert "WP-3548, WP-3550: Add People FPP fields."

This reverts commit 81f6cbdd0b42a55ec126954bc4715727bf95cb9c.
WP-3396: Add new fields for people_fpp.