Replace mediatag markdown syntax by html. Enable file upload in /code.

www/common/diffMarked.js

@@ -154,9 +154,11 @@ define([
             var $mts = $content.find('media-tag:not(:has(*))');
             $mts.each(function (i, el) {
                 MediaTag(el);
+                console.log(el.outerHTML);
                 var observer = new MutationObserver(function(mutations) {
                     mutations.forEach(function(mutation) {
                         if (mutation.type === 'childList') {
+                            console.log(el.outerHTML);
                             var list_values = [].slice.call(el.children);
                             mediaMap[el.getAttribute('src')] = list_values;
                         }