refs https://github.com/TryGhost/Team/issues/584
- No longer uses a API URL + redirect inside verification emails. This is replaced by a new route (`/settings/members/?verifyEmail=token`) that does the API request and shows a modal.
- Removed update button when changing support email address in the Portal settings
- Added `_meta` attribute to settings (uses same pattern as newsletters model)
- When updating the `membersSupportAddress` setting (via the normal edit endpoint), the `sent_email_verification` meta property will get set by the API. When this new property is present, we'll show a warning that the support address requires verification.
9e7727752c