Implement class to extract data for indexing
Rummager task now indexes Support pages
Use support page meta descriptions for search
Add meta descriptions for support pages for search

These will be shown as part of the search result, and will help given more
context and explain what the result is about.
Don't index the support index page

It's unlikely to be helpful as a search result
Retitle page about MyBusiness
Improve support page titles in a search context
Support pages have a section
Change variable name to reflect reality
Merge remote-tracking branch 'origin/index_support_pages'