removed decc rejected_by_urlscan
tidied mappings by hand in two passes
Revert "tidied mappings by hand in two passes"

This reverts commit 8e03942d1e2613fb5064430695c8f3fc0ee2e26f.
Revert "removed decc rejected_by_urlscan"

This reverts commit ead18c480085c58297406a5a3e2510912c6d2e9f.