New cabinet office mappings
Launch mappings number10
Merge branch 'master' of git://github.com/alphagov/redirector into newmappings

Conflicts:
	data/mappings/number10.csv
Number10 launch mappings
Manual resolution of 418
Merge pull request #183 from rjc123/newmappings

Launch mappings for no10, some latebreaking cabinet office.
Update whitelist to include blogs.dfid.gov.uk
Merge pull request #184 from rjc123/newsites

Update whitelist to include blogs.dfid.gov.uk
Add www.data.gov.uk to whitelist
Merge pull request #185 from rjc123/newsites

Add www.data.gov.uk to whitelist
New home office mappings
Merge pull request #187 from rjc123/newmappings

New home office mappings