[erp5_web_renderjs_ui] Matrixbox: do not use manually create the DOM element

bt5/erp5_web_renderjs_ui/PathTemplateItem/web_page_module/rjs_gadget_erp5_field_matrixbox_js.js

@@ -138,16 +138,14 @@
 
                       return RSVP.all(row.map(function (column) {
                         // transform all cell-definitions into actual gadgets
-                        var col_element = document.createElement('td');
-
                         return gadget.declareGadget('gadget_erp5_label_field.html', {
                           scope: column.key,
-                          element: col_element,
+                          element: 'td',
                           sandbox: "public"
                         })
                           .push(function (sub_gadget) {
                             gadget.props.gadget_dict[column.key] = sub_gadget;
-                            return col_element;
+                            return sub_gadget.element;
                           });
                       }));
                     })

bt5/erp5_web_renderjs_ui/PathTemplateItem/web_page_module/rjs_gadget_erp5_field_matrixbox_js.xml

@@ -236,7 +236,7 @@
             </item>
             <item>
                 <key> <string>serial</string> </key>
-                <value> <string>970.6987.53119.54186</string> </value>
+                <value> <string>971.7721.48108.61320</string> </value>
             </item>
             <item>
                 <key> <string>state</string> </key>
@@ -254,7 +254,7 @@
                     </tuple>
                     <state>
                       <tuple>
-                        <float>1536332923.27</float>
+                        <float>1542884421.69</float>
                         <string>UTC</string>
                       </tuple>
                     </state>