message: remove duplicate material icons link in index.html
diff: <script>document.write('<base href="' + document.location + '" />');</script>
  <title>Code for Social Good</title>
  - <!--Material Design icons -->
  - <link href="http://fonts.googleapis.com/icon?family=Material+Icons" rel="stylesheet">
  <!--MaterializeCSS -->
  <link href="http://fonts.googleapis.com/icon?family=Material+Icons" rel="stylesheet">
  <link type="text/css" rel="stylesheet" href="node_modules/materialize-css/dist/css/materialize.css" media="screen,projection" />
  