Add scroll tracking to 2 DWP UC & 2 CTS pages (v2)
Add scroll tracking to 2 DWP UC & 2 CTS pages (v2)

Have added header scroll tracking to the following pages:
/openingupwork
/guidance/common-technology-services-cts-secure-email-blueprint
/guidance/common-technology-services-cts-guide-to-implementing-the-secure-email-blueprint

Also due to content change, amended the header scroll tracking on:
/guidance/universal-credit-how-it-helps-you-into-work
kalleth/static,kalleth/static,kalleth/static,alphagov/static,alphagov/static,alphagov/static,kalleth/static