Performance: only add terms-of-service frontend script if the check is not passed yet

[ShGKme]

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Feature request

Current process:

1. App adds a frontend script
2. Frontend makes an HTTP request to check for ToS being accepted

Proposal:

1. Check for ToS on Backend
2. Only add the frontend script if it is necessary

Result:

• Removes an unnecessary script from the page which is actually needed only once per user
• Removes HTTP request for a data that we could check in the first request