message: fix(Index): remove css link, add material icons
diff: <base href="/">
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  - <link rel="stylesheet" href="styles.css">
  + <!--
  + -<link rel="stylesheet" href="styles.css">
  + -->
  <!-- Polyfill(s) for older browsers -->
  <script src="node_modules/core-js/client/shim.min.js"></script>
  <link href="https://unpkg.com/@angular/material/prebuilt-themes/deeppurple-amber.css" rel="stylesheet">
  <link rel="stylesheet" href="https://unpkg.com/ladda/dist/ladda-themeless.min.css" media="screen">
  + <link href="https://fonts.googleapis.com/icon?family=Material+Icons" rel="stylesheet">
  </head>
  <body>
  