message: Show server details on login for unreachable homeserver
  This fixes the login page to be more helpful when the current homeserver is
  unreachable: it reveals the server change field, so you have some chance to
  progress forward.
  Fixes
diff: @@ -386,7 +386,11 @@ module.exports = createReactClass({
  ...AutoDiscoveryUtils.authComponentStateForError(e),
  });
  if (this.state.serverErrorIsFatal) {
  - return; // Server is dead - do not continue.
  + // Server is dead: show server details prompt instead
  + this.setState({
  + phase: PHASE_SERVER_DETAILS,
  + });
  + return;
  }
  }
  