message: Restore `download-folder-button` in "Repository refresh" beta
diff: import React from 'dom-chef';
  import select from 'select-dom';
  import * as pageDetect from 'github-url-detection';
  +import DownloadIcon from 'octicon/download.svg';
  import features from '.';
  function init(): void {
  - select('.file-navigation .BtnGroup.float-right')?.prepend(
  + const folderButtonGroup = select('.file-navigation .BtnGroup.float-right');
  + if (folderButtonGroup) {
  + folderButtonGroup.prepend(
  <a
  className="btn btn-sm BtnGroup-item"
  href={`https://download-directory.github.io/?url=${location.href}`}
  @@ -13,6 +16,18 @@ function init(): void {
  Download
  </a>
  );
  + } else {
  + // "Repository refresh" layout
  + select('.file-navigation > .d-flex')!.append(
  + <a
  + className="btn ml-2"
  + href={`https://download-directory.github.io/?url=${location.href}`}
  + >
  + <DownloadIcon className="mr-1"/>
  + Download
  + </a>
  + );
  + }
  }
  void features.add({
  