use backend markdown renderer

doc/views/default/index/index.ls

@@ -88,7 +88,9 @@
     ?>
 </div>
 <div class = "md-content" id = "renderer">
-    
+    <?lua
+        echo(data)
+    ?>
 </div>
 <div class = "pagenav">
     <?lua
@@ -103,18 +105,4 @@
             echo("</a>")
         end
     ?>
-</div>
-<script>
-    window.addEventListener('load', (event) => {
-        var markdown = `<?=std.b64encode(data)?>`;
-        var converter = new showdown.Converter();
-        var html = converter.makeHtml(atob(markdown));
-        document.getElementById("renderer").innerHTML = html;
-        // highlight and math display
-        renderMathInElement(document.getElementById("renderer"));
-        document.querySelectorAll("pre code").forEach(element => {
-            hljs.highlightBlock(element);
-            hljs.lineNumbersBlock(element);
-        });
-    });
-</script>
+</div>

doc/views/default/layout.ls

@@ -13,10 +13,10 @@ local elinks = __main__:get("elinks")
             rel="stylesheet"
             type="text/css"
             href="<?=HTTP_ROOT?>/rst/katex/katex.min.css" />
-        <script
+        <!--script
             type="text/javascript"
             src="<?=HTTP_ROOT?>/rst/gscripts/showdown.min.js"
-        ></script>
+        ></script-->
         <script
             src="<?=HTTP_ROOT?>/rst/hljs/highlight.pack.js"
         ></script>