erp5_web_renderjs_ui: Add class to link only if class_name is defined

bt5/erp5_web_renderjs_ui/PathTemplateItem/web_page_module/rjs_gadget_erp5_panel_js.js

@@ -22,7 +22,10 @@
       dd_element = document.createElement('dd');
       dd_element.setAttribute('class', 'document-listview');
       a_element = document.createElement('a');
-      a_element.setAttribute('class', action_list[i].class_name);
+      if (action_list[i].class_name) {
+        // Avoid add class='undefined' in HTML
+        a_element.setAttribute('class',   action_list[i].class_name);
+      }
       a_element.href = href_list[index + i];
       a_element.textContent = action_list[i].title;
       dd_element.appendChild(a_element);

bt5/erp5_web_renderjs_ui/PathTemplateItem/web_page_module/rjs_gadget_erp5_panel_js.xml

@@ -234,7 +234,7 @@
                   </item>
                   <item>
                       <key> <string>serial</string> </key>
-                      <value> <string>987.27464.21813.55483</string> </value>
+                      <value> <string>988.2148.10611.64955</string> </value>
                   </item>
                   <item>
                       <key> <string>state</string> </key>
@@ -252,7 +252,7 @@
                           </tuple>
                           <state>
                             <tuple>
-                              <float>1604411452.55</float>
+                              <float>1605623076.71</float>
                               <string>UTC</string>
                             </tuple>
                           </state>