Minor bug fixes to HMRC manual layout and breadcrumbs #3284
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https://trello.com/c/DwMxfbuf/1145-breadcrumb-issues-in-hmrc-internal-manuals
1. Don't display the "Summary" heading if there's no content below it.
Eg on https://www.gov.uk/hmrc-internal-manuals/capital-gains-manual
Here's a page that has a populated description on live and on the review app to show that there's no visible change.
2. If breadcrumbs are present, display them
Eg debt management and banking manual
Eg capital gains manual
Follow these steps if you are doing a Rails upgrade.