Add missing favicon (#23)

Author: CodinCat

template/index.html

@@ -5,6 +5,9 @@
     <meta http-equiv="X-UA-Compatible" content="IE=edge">
     <meta name="viewport" content="width=device-width, initial-scale=1">
     <title>{{ name }}</title>
+    <link rel="icon" type="image/png" sizes="32x32" href="/static/img/icons/favicon-32x32.png">
+    <link rel="icon" type="image/png" sizes="16x16" href="/static/img/icons/favicon-16x16.png">
+    <!--[if IE]><link rel="shortcut icon" href="/static/img/icons/favicon.ico"><![endif]-->
     <!-- Add to home screen for Android and modern mobile browsers -->
     <link rel="manifest" href="/static/manifest.json">
     <meta name="theme-color" content="#4DBA87">