Test for presence of analytics in minified JS
Test for presence of analytics in minified JS

Minifying the JS shortens variable names wherever their scope makes it possible.
This means that `GOVUK.analytics.trackPageView` gets shortened to something like
`e.t.trackPageView`, and not in a predicatable way. Because the `trackPageView`
method could be used by indeterminable other scripts the compiler can't minify
it, so testing for just the presence of its name is safe.

AusDTO/dto-digitalmarketplace-buyer-frontend,alphagov/digitalmarketplace-buyer-frontend,alphagov/digitalmarketplace-buyer-frontend,mtekel/digitalmarketplace-buyer-frontend,alphagov/digitalmarketplace-buyer-frontend,alphagov/digitalmarketplace-buyer-frontend,AusDTO/dto-digitalmarketplace-buyer-frontend,mtekel/digitalmarketplace-buyer-frontend,AusDTO/dto-digitalmarketplace-buyer-frontend,mtekel/digitalmarketplace-buyer-frontend,mtekel/digitalmarketplace-buyer-frontend,AusDTO/dto-digitalmarketplace-buyer-frontend