confirmation for change in pod parameters

To avoid change of control some changes shall be closely supervised :

• user email
• IdP provider
• owner
• external webId

Among possibilities are :

• ask confirmation by email : email is not a MUST actually
• have a secure resource box where to check for new values where only owner has access
  actually NSS uses .meta,
  inconvenient it is discoverable in container representation, but all values are actually public)

該 issue 沒有指明檔案、測試或進入點。首先追蹤 pod 參數（例如使用者電子郵件、IdP 提供者、擁有者和外部 webId）是如何被變更的，然後與專案維護者一起定義確認和私有資源的要求。完成的標準是：透過一個已達成共識的機制防止未經監督的變更，並對其安全行為進行測試。