Update sitemap options in gatsby-config.js to hide pages we shouldn't be showing to Google etc #111
Description
Example of pages that should be hidden:
/getHelpSubmit
We might need some way of adding metadata to pages that should be hidden so we can make a graphQL query for them.
Docs on sitemap are here: https://www.gatsbyjs.org/packages/gatsby-plugin-sitemap/
p.s. the sitemap doesn't generate in dev mode locally with npm run develop so you have to run npm run build to get a production build instead, or if you have a PR the netlify preview will have it.