message: prefill id server box with default if there isn't one
diff: @@ -85,9 +85,11 @@ export default class SetIdServer extends React.Component {
  constructor() {
  super();
  - let defaultIdServer = abbreviateUrl(MatrixClientPeg.get().getIdentityServerUrl());
  - if (!defaultIdServer) {
  - defaultIdServer = abbreviateUrl(SdkConfig.get()['validated_server_config']['idServer']) || '';
  + let defaultIdServer = '';
  + if (!MatrixClientPeg.get().getIdentityServerUrl() && SdkConfig.get()['validated_server_config']['isUrl']) {
  + // If no ID server is configured but there's one in the config, prepopulate
  + // the field to help the user.
  + defaultIdServer = abbreviateUrl(SdkConfig.get()['validated_server_config']['isUrl']);
  }
  this.state = {
  