Remove microsites cruft

These were intended for Transition to consume, and I think transition-old did.
I don't believe redirector ever used them.
Merge pull request #821 from rjc123/newsites

Update IIAC webarchive timestamp
Merge pull request #805 from alphagov/remove_microsites_cruft

Remove microsites cruft
Merge pull request #822 from rjc123/newsites

Three new sites for configuration
Merge pull request #823 from rjc123/newsites

Configure DCLG legacy sites
Merge pull request #824 from rjc123/newsites

Resolve zendesk ticket with new mappings for HMCTS
Configure TLDs for SCE sites