slapos_jio_ui_test: wait for page to be loaded

master/bt5/slapos_jio_ui_test/PathTemplateItem/portal_tests/slaposjs_zuite/testSlapOSJSProject.zpt

@@ -67,6 +67,7 @@
         <td>//a[text()="TEST-SLAPOSJS-PROJECT 0"]</td>
         <td></td>
       </tr>
+      <tal:block metal:use-macro="here/Zuite_SlapOSCommonTemplate/macros/wait_for_content_loaded" />
 
       <tal:block tal:define="header python: 'Project : ${title}';
                              dummy python: context.REQUEST.set('mapping', {'title': 'TEST-SLAPOSJS-PROJECT 0'}) ">