Update MOU

[theseanything]

This pull request updates the Memorandum of Understanding (MOU) text shown to users in the app/views/mou_signatures/_mou_version_current.html.erb file. The changes clarify the agreement's start conditions, notification periods, and responsibilities regarding security, data management, and access. The language is simplified and some sections are condensed for clarity and to reduce prescriptive technical detail.

Key changes include:

Agreement terms and notifications:

• The agreement now starts when a user agrees to the MOU on behalf of their organisation, rather than when 'Organisation Admin' accounts are created.
• The notification period for updates to the agreement is reduced from 30 to 7 calendar days.
• References to upgrading users to Organisation Admins upon agreement have been removed.
• The definition of "Organisation Admin" has been removed from the glossary.

Security and access responsibilities:

• Security requirements for users are now described in general terms, focusing on maintaining appropriate safeguards, rather than listing specific practices and technical standards.
• The responsibility for managing user access is clarified, including promptly removing access for users who no longer require it.
• The responsibility for the security and configuration of systems used to receive form response data (including email, APIs, and cloud storage) is made explicit, with a requirement to comply with government secure email policy.
• The duty to validate form response data, including email addresses, is clarified as the organisation's responsibility.

Other clarifications:

• The statement about the service being free is simplified, with rationale and context removed.
• The suggestion regarding Data Protection Officer access is reworded to focus on ensuring appropriate access rather than specifying account types.

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
87.4% Duplication on New Code

See analysis details on SonarQube Cloud

[github-actions]

🎉 A review copy of this PR has been deployed! You can reach it at: https://pr-2528.admin.review.forms.service.gov.uk/

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[DavidBiddle]

Changes all look sensible, they're clearly written, and well explained in the commit messages 🎉

I think the Last Updated date needs changing but once that's done I think this all looks good.

[theseanything]

Out of date now.