manage auth and add secret

templates/index.tmpl

@@ -9,7 +9,8 @@
     <script src="https://twemoji.maxcdn.com/v/latest/twemoji.min.js" crossorigin="anonymous"></script>
     <style type="text/css">h2 { margin: 2em 0em; }  .ui.container { padding-top: 5em; padding-bottom: 5em; } </style>
     <script type="text/javascript">
-        function vote(option){$.post( "/", {option}, ( data ) => {  $('.modal').modal('show');});}
+        var key = "{{ .Key }}";
+        function vote(option){$.post( "/", {option, key}, ( data ) => {  $('.modal').modal('show');});}
         function reload(){document.location.reload(true);}    
        
     </script>