Add jasmine for testing JavaScript
Merge pull request #37 from alphagov/add-js-test-runner

Add jasmine for testing JavaScript
Added new validation messages to page 1, 2 3 and 4
Add validation errors to pages using the heading template
Show validation errors in heading template
Show validation messages in templates, pages 1–4
Validation messages appearing on pages 5–17
- Including wrappers around questions with errors for pages 1–17