get rid of embedded javascript (move it to /static/js)

templates/layout.html

@@ -9,8 +9,8 @@
     <link rel="stylesheet" href="static/css/mini-beieli-web.css">
     <link rel="stylesheet" href="static/css/mini-beieli-web-custom.css">
 
-    <script src="/static/js/fontawesome-5.11.2/all-minified.js"></script>
-    <script src="/static/js/jquery-3.3.1/jquery.min.js"></script>
+    <script type="text/javascript" src="/static/js/fontawesome-5.11.2/all-minified.js"></script>
+    <script type="text/javascript" src="/static/js/jquery-3.3.1/jquery.min.js"></script>
 {{template "header_additions" . }}
   </head>
   <body>
@@ -83,7 +83,7 @@
       {{template "body_content" . }}
      </div>
     </section>
-    <script src="/static/js/mini-beieli-web.js"></script>
+    <script type="text/javascript" src="/static/js/mini-beieli-web.js"></script>
   </body>
 </html>
 {{end}}