Added a continue button on the registration success page.
Changed Continue button to 'Complete registration' and added padding around the submit-input button.
Merge pull request #2502 from guardian/registration-continue

Added 'Complete registration' button to registration-confirmation page.
Update sequence items during right ear traversal
Check sequence is valid before dedupe
Merge pull request #2533 from guardian/right-ear-sequencing

Update sequence items during right ear traversal
Merge branch 'master' of https://github.com/guardian/frontend into identity-responsive-forms