Enable isso comment code highlight.

src/js/app/issoCodeHighlight.js

@@ -0,0 +1,52 @@
+/* Automatically convert multiline `code` to a full `pre` block. */
+$(function () {
+    /* globals hljs */
+    'use strict';
+    var processedFlag = 'js-hljs';
+
+    function renderCode () {
+        $('code:not(.hljs,.'+ processedFlag +')').each(function (i, el) {
+            var $el = $(el);
+            var html = $el.html();
+            var render = false;
+
+            if ($el.parent().is('pre')) {
+                render = true;
+            } else if (html.indexOf('\n') !== -1) {
+                $('<pre>')
+                    .insertBefore($el)
+                    .append($el);
+                $el.html(html.trim());
+                render = true;
+            }
+
+            if (render) {
+                hljs.highlightBlock(el);
+            }
+
+            $el.addClass(processedFlag);
+        });
+    }
+
+    renderCode();
+    setTimeout(renderCode, 5000);
+
+    // if current tab is active, re-scan for un-processed code tags.
+    // In-case of isso loading comments slowly.
+    var renderHandle;
+    var prevType;
+    $(window).on("blur focus", function(e) {
+        if (prevType !== e.type) {
+            switch (e.type) {
+                case "blur":
+                    clearInterval(renderHandle);
+                    break;
+                case "focus":
+                    setInterval(renderCode, 15000);
+                    break;
+            }
+        }
+
+        prevType = e.type;
+    });
+});