Consolidate opt-ins in Studio sign-up

[bjester]

This feedback was given by @tomiwaoLE

Desired behavior

The opt-in agreement of the privacy policy and terms of service can be combined into one checkbox.

Figma design file: https://www.figma.com/file/1tQQ0Sw1yDjzO66hyjLVPM?node-id=556:4666#323944643

Current behavior

Currently there's a checkbox for each document

Value add

A first time user has to agree to two mandatory opt-ins at sign up - Terms of Service and privacy policy. Since we can’t skip either one as both are required, it would make sense to combine them into one opt-in sentence and link both pages either inline or underneath to reduce signup friction.

References

https://www.notion.so/learningequality/Suggestion-on-opt-ins-at-sign-up-eb425ac5843b4d90a94f484943d47645