private HTMLPanel createFeedbackPanel(List<String> history) {
    StringBuilder htmlBuilder = new StringBuilder();
    htmlBuilder.append("<div id = 'feedbackHistoryPanel'>"
        + "<div class='panelTitle'>"+constants.Feedback()+"</div>");
    for (String h : history) {
      htmlBuilder.append("<div class='FeedbackEntry'>"+h+"</div>");
    }
    htmlBuilder.append("</div>");
    String html = htmlBuilder.toString();
    HTMLPanel panel = new HTMLPanel(html);
    return panel;
  }