WP-2505: Move filters below search.
WP-2505: Add last name search.
WP-2505: Update view to spec.
WP-2505: Do not used exposed form as a block.
WP-2505: Specify last name as an AZ filter.
WP-2505: Move term filters to secondary section.
WP-2505: Remove OR filter logic, just use AND.
WP-2650: Remove custom exposed filter code.