Functionality updates

[msbtterswrth]

Tasks that we need to complete still

• prefill alert needs to be added on individual form field edit pages to match mockup.
• summary page needs to have conditional logic to show Add / Edit / Optional link text because right now it is just Edit
• The home address is shown as an available field for this page, but is not currently supported on the ContactInfo component, so would need to be added.
• If the field is missing, then the edit page for a field should have 'Add' in the heading instead of 'Edit'
• non-required fields should include (optional) next to the field heading
• Configuration changes need to be noted around the recommended page title, removing description, and any other custom content or deviations from the existing content used in the ContactInfo component
• the 'Finish this form later' link should be added to the field editing pages
• Testing. Still very alpha in code status and full coverage with tests is needed as the remaining items are firmed up.
• double check that everything is updated with the most recent figma changes per slack thread