Add document series to search index
Index operational fields
Policy team and groups searchable

Have added the slug and these need to be regenerated in the migration.

https://www.pivotaltracker.com/story/show/35578477
use the summary or name for policy groups
Index people
Add extra classes to the searchable_classes
Skip people who are already in the index as ministers
Remove people from index when adding/removing ministers
Index About us on orgs and CorporateInformationPages

The about us page isn't a actual page - but a field on orgs
so for now we're just including the content in the orgs indexable
conent
fix syntax
use rails' delagate
fix org indexable_content test
fix further tests