message: silence react warning when showing edited marker, by also giving the body a key
diff: @@ -541,8 +541,8 @@ export function bodyToHtml(content, highlights, opts={}) {
  });
  return isDisplayedWithHtml ?
  - <span className={className} dangerouslySetInnerHTML={{ __html: safeBody }} dir="auto" /> :
  - <span className={className} dir="auto">{ strippedBody }</span>;
  + <span key="body" className={className} dangerouslySetInnerHTML={{ __html: safeBody }} dir="auto" /> :
  + <span key="body" className={className} dir="auto">{ strippedBody }</span>;
  }
  export function emojifyText(text, addAlt) {
  