[erp5_web_renderjs_ui] Multirelationfield: no need to manually create the DOM element

bt5/erp5_web_renderjs_ui/PathTemplateItem/web_page_module/rjs_gadget_erp5_multirelationstringfield_js.js

@@ -7,7 +7,7 @@
                             value_uid, value_portal_type, index) {
     var input_gadget;
     return gadget.declareGadget('gadget_erp5_relation_input.html', {
-      element: document.createElement("fieldset")
+      element: "fieldset"
     })
       .push(function (result) {
         input_gadget = result;

bt5/erp5_web_renderjs_ui/PathTemplateItem/web_page_module/rjs_gadget_erp5_multirelationstringfield_js.xml

@@ -230,7 +230,7 @@
             </item>
             <item>
                 <key> <string>serial</string> </key>
-                <value> <string>971.1893.7821.24388</string> </value>
+                <value> <string>971.7721.48108.61320</string> </value>
             </item>
             <item>
                 <key> <string>state</string> </key>
@@ -248,7 +248,7 @@
                     </tuple>
                     <state>
                       <tuple>
-                        <float>1539872955.21</float>
+                        <float>1542795524.78</float>
                         <string>UTC</string>
                       </tuple>
                     </state>