[erp5_web_renderjs_ui] Field do not always have a getContent method

bt5/erp5_web_renderjs_ui/PathTemplateItem/web_page_module/rjs_gadget_erp5_label_field_js.js

@@ -94,7 +94,10 @@
       var argument_list = arguments;
       return this.getDeclaredGadget(SCOPE)
         .push(function (gadget) {
-          return gadget.getContent.apply(gadget, argument_list);
+          if (gadget.getContent !== undefined) {
+            return gadget.getContent.apply(gadget, argument_list);
+          }
+          return {};
         });
     })
 

bt5/erp5_web_renderjs_ui/PathTemplateItem/web_page_module/rjs_gadget_erp5_label_field_js.xml

@@ -230,7 +230,7 @@
             </item>
             <item>
                 <key> <string>serial</string> </key>
-                <value> <string>954.25941.22930.26914</string> </value>
+                <value> <string>954.44486.54507.19541</string> </value>
             </item>
             <item>
                 <key> <string>state</string> </key>
@@ -248,7 +248,7 @@
                     </tuple>
                     <state>
                       <tuple>
-                        <float>1476194017.94</float>
+                        <float>1476793988.08</float>
                         <string>UTC</string>
                       </tuple>
                     </state>