Single BV add
New mappings for BRDO
Merge pull request #462 from rjc123/newsites

Remove unnecessary csv
Merge pull request #461 from rjc123/newmappings

New mappings for BRDO and BV
Add config and redirects for digital strategy reports

This should redirect publications.cabinetoffice.gov.uk to its new home
on GOV.UK. These mappings were originally created manually from a
spreadsheet and redirected using hand-crafted Nginx.
Make trailing paths canonical
Add basic test for subdomain
Merge pull request #463 from alphagov/redirect-gov-digital-strategy-reports

Add config and redirects for digital strategy reports
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