Don't double-up on #main-outlet when static content is rendered through Ember

app/assets/javascripts/discourse/controllers/static_controller.js

@@ -18,7 +18,8 @@ Discourse.StaticController = Discourse.Controller.extend({
     $preloaded = $("noscript[data-path=\"" + path + "\"]");
     if ($preloaded.length) {
       text = $preloaded.text();
-      text = text.replace(/<header[\s\S]*<\/header\>/, '');
+      text = text.match(/<!-- preload-content: -->((?:.|[\n\r])*)<!-- :preload-content -->/);
+      text = text[1];
       return this.set('content', text);
     } else {
       return jQuery.ajax({

app/views/layouts/application.html.erb

@@ -40,7 +40,9 @@
           </div>
         </header>
         <div id="main-outlet" class="container">
+          <!-- preload-content: -->
           <%= yield %>
+          <!-- :preload-content -->
         </div>
       </noscript>
     </section>