Merge pull request #109 from rjc123/newmappings

DEFRA and MOJ Launch Mappings
better assertion report
validate sitemaps now it's quick
makerules for individual site
new error pages from Mark, tweaked a little
made 410 title a hyperlink
copytext updated with @yahoo_pete
Merge pull request #111 from alphagov/new_error_pages

New error pages
Added smoke tests for UK Export Finance alias ECGD.GOV.UK
Directgov title isn't DirectGov
simple php unit testing
removed defunct TBD comments
flipped sense of expected status code in test
Added appropriate test for Zambia
Merge pull request #112 from alphagov/fix_tests

Added appropriate test for Zambia
Updated Zambia tests to include homepage.
Added homepage tests for Scotland Office
made sense of 'is' assertion consistent
deprecated Directgov PDF for ticket #65014
Revised FCO mappings to fix 404s for mainstream