Upgrade smartdown gem to support multiple-line descriptions
Modify test script to use new-style smartdown description

Description may now come back as empty string from Smartdown
SPL scenarios
Fix flow for single adopter case

Adoption pay pre-April 5th was inverted with Adoption pay
Fix flow for worker mother and employed partner

Workers are not entitled to pay
Merge pull request #1228 from alphagov/spl-test-scenarios

SPL test scenarios