Refactor service user profiles module

[annarhughes]

What changes did you make?

• Refactored service user profiles functionality from utils/ to its own service-user-profiles module
• Added a catch for mailchimp profile not found error - now creates a mailchimp account if failed to update profile on 404
• Prevent unnecessary updates to mailchimp and crisp accounts if the only change to the user profile is lastActiveAt and the users profile was already updated today. Mailchimps lastActiveAt field only holds the date as there is no date/time type available - meaning any subsequent updates to this field are redundant