rich results/metadata for document series, minister, people, world location and worldwide organisation

- minor style fix for .sections list items
- 'document series' displays indexable content
- 'organisation' displays indexable content
- 'minister' displays indexable content and anchors to responsibilities
and current role holder
- 'person' displays indexable content and anchors to biography and roles
- 'world location' displays indexable content and anchors to priorities
and organisations
- 'worldwide organisations' displays indexable content and anchors to
services and contact details