added demoted tenancy section
when demoted tenancy then don't validate presence of tenancy start_date
remove "County Court" from court name to pass to PDF
Fields added for demoted tenancy in PDF form
Updated test PDF form with the demoted_tenancy fields
Merge pull request #65 from ministryofjustice/demoted_tenancy

Demoted tenancy section
Create landing page
Added tests for landing page routes
merge