Register the /oil-and-gas prefix with the router
Register the /oil-and-gas prefix with the router

Register the browse pages at /oil-and-gas are registered with the
router. A prefix route is used so that subcategory pages are also
matched.

The registration of this route only takes place where the feature
flag 'industry_sectors_browse_enabled' is set to true.
alphagov/frontend,alphagov/frontend,alphagov/frontend,alphagov/frontend