officejs_support_request_ui: update the relative times of posts periodically

otherwise the test stays on "a few seconds ago" and this becomes "wrong
information", unlike an absolute date with stays correct.

bt5/erp5_officejs_support_request_ui/PathTemplateItem/web_page_module/gadget_supportrequest_pt_form_view_discussable_js.js

@@ -257,6 +257,14 @@
           return queue;
         });
     })
+    .onLoop(function () {
+      // update relative time
+      this.element.querySelectorAll("li>time").forEach(
+        function (element) {
+          element.textContent = moment(element.getAttribute('datetime')).fromNow();
+        }
+      );
+    }, 5000)
     .onEvent('submit', function () {
       this.submitPostComment();
     });

bt5/erp5_officejs_support_request_ui/PathTemplateItem/web_page_module/gadget_supportrequest_pt_form_view_discussable_js.xml

@@ -252,7 +252,7 @@
                     </tuple>
                     <state>
                       <tuple>
-                        <float>1539140577.69</float>
+                        <float>1539939405.65</float>
                         <string>GMT+9</string>
                       </tuple>
                     </state>