Support multi-language

Author: jondy

webapp/index.html

@@ -293,7 +293,7 @@ <h4 id="license">License</h4>
     </div>
     <!-- /.tab-pane -->
     <div role="tabpanel" class="tab-pane" id="documentation">
-      <div class="content">Documentation</div>
+      <div class="content">tutorial.html</div>
     </div>
     <div role="tabpanel" class="tab-pane" id="purchase">
       <div class="content">

webapp/js/main.js

@@ -23,7 +23,7 @@ define(['settings', 'utils', 'connector', 'project'], function (settings, utils,
     document.getElementById('project-manage-open').addEventListener('click', project.openProject, false);
     document.getElementById('project-manage-remove').addEventListener('click', project.removeProject, false);
 
-    utils.loadPage('tutorial.html', function (text) {
+    utils.loadPage(document.getElementById('documentation').firstElementChild.textContent, function (text) {
         document.getElementById('documentation').firstElementChild.innerHTML = text;
         document.getElementById('documentation').querySelector('h1').remove();
     });