Remove UUIDs from URLs sent to Google Analytics
Remove UUIDs from URLs sent to Google Analytics

If all our URLs are unique (because they contain service/job/template
IDs) then it makes it hard to aggrate how users are behaving across a
range of services/jobs/templates.

This commit replaces anything that looks like a UUID in a URL with `…`.

alphagov/notifications-admin,gov-cjwaszczuk/notifications-admin,alphagov/notifications-admin,alphagov/notifications-admin,alphagov/notifications-admin,gov-cjwaszczuk/notifications-admin,gov-cjwaszczuk/notifications-admin,gov-cjwaszczuk/notifications-admin