Enable CSS that is behind a `@media print` media query

enable-print-styles.js

Object.keys(document.styleSheets).forEach(function(styleSheetKey) {
  var rules = document.styleSheets[styleSheetKey].rules || {};
  Object.keys(rules).forEach(function(ruleKey) {
    var media = rules[ruleKey].media;
    if (media) {
      media.mediaText = media.mediaText.replace('print', 'screen');
    }
  });
});