* Implement MSC 1929 Homeserver Admin Contact Fixes #1612 For details to the proposed (not accepted yet) MSC, see: https://github.com/matrix-org/matrix-spec-proposals/blob/hs/proposal-admin-contact-1/proposals/1929-admin-contact.md * Implement feedback from PR #1931 * Implement feedback from PR #1931 * Fix mixed indentation