Problem:
New accounts can't be created on https://structured-commons.wmflabs.org because of a broken captcha on https://structured-commons.wmflabs.org/w/index.php?title=Special:CreateAccount
The captcha box shows an error: "ERROR for site owner: Invalid domain for site key"
Acceptance Criteria:
- Magnus gets an account (WMDE priority)
- Account creation is un broken (for the WMF / sdoc team)