Material icons não funciona offline | jQuery: avance na biblioteca mais popular do mercado parte 2

index.html

<!DOCTYPE html>
<html lang="en">
<head>
  <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"/>
  <meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1.0"/>
  <title></title>

  <!-- CSS  -->
  <link href="css/google-fonts.css" type="text/css" rel="stylesheet"/>
  <link href="css/materialize.css" type="text/css" rel="stylesheet" media="screen,projection"/>
</head>
<body>

  <nav class="light-red lighten-1" role="navigation">
    <div class="nav-wrapper container"><a id="logo-container" href="#" class="brand-logo">Logo</a>
      <ul class="right hide-on-med-and-down">
        <li><a href="#">Navbar Link</a></li>
      </ul>

      <ul id="nav-mobile" class="side-nav">
        <li><a href="#">Navbar Link</a></li>
      </ul>
      <a href="#" data-activates="nav-mobile" class="button-collapse"><i class="material-icons">menu</i></a>
    </div>
  </nav>



  <!--  Scripts-->
  <script src="js/jquery.js"></script>
  <script src="js/materialize.js"></script>
  <script src="js/index.js"></script>

  </body>
</html>

google-fonts.css

@font-face {
  font-family: 'Material Icons';
  font-style: normal;
  font-weight: 400;
  src: url(../fonts/material-design-icons/MaterialIcons-Regular.eot); /* For IE6-8 */
  src: local('Material Icons'),
       local('MaterialIcons-Regular'),
       url(../fonts/material-design-icons/MaterialIcons-Regular.woff2) format('woff2'),
       url(../fonts/material-design-icons/MaterialIcons-Regular.woff) format('woff'),
       url(../fonts/material-design-icons/MaterialIcons-Regular.ttf) format('truetype');
}

.material-icons {
  font-family: 'Material Icons';
  font-weight: normal;
  font-style: normal;
  font-size: 24px;  /* Preferred icon size */
  display: inline-block;
  line-height: 1;
  text-transform: none;
  letter-spacing: normal;
  word-wrap: normal;
  white-space: nowrap;
  direction: ltr;

  /* Support for all WebKit browsers. */
  -webkit-font-smoothing: antialiased;
  /* Support for Safari and Chrome. */
  text-rendering: optimizeLegibility;

  /* Support for Firefox. */
  -moz-osx-font-smoothing: grayscale;

  /* Support for IE. */
  font-feature-settings: 'liga';
}