Add a collapse button to the rows on the form results page

[faith-mutua]

The rows on the form results page have an expand button which allows a user to view a candidate's details but do not have a collapse button save for the topmost row.

Steps to reproduce

• Navigate to the Form Results page
• Click on the green button to the extreme left of the topmost row
• Click on the green button to the extreme left of any other row and notice the difference