[erp5_web_renderjs_ui] Do not crash when network is down

bt5/erp5_web_renderjs_ui/PathTemplateItem/web_page_module/rjs_gadget_erp5_page_form_js.js

@@ -512,8 +512,11 @@ and handling data send&receive.
 
           // If the response is JSON, then look for the translated message sent
           // by the portal and display it to the user
-          if (error.target.response.type === 'application/json' ||
-              error.target.response.type === 'application/hal+json') {
+          if (error.target.response && (
+              error.target.response.type === 'application/json' ||
+              error.target.response.type === 'application/hal+json'
+            )
+              ) {
 
             return gadget.notifySubmitted()
               .push(function () {

bt5/erp5_web_renderjs_ui/PathTemplateItem/web_page_module/rjs_gadget_erp5_page_form_js.xml

@@ -228,7 +228,7 @@
             </item>
             <item>
                 <key> <string>serial</string> </key>
-                <value> <string>975.56533.48127.29525</string> </value>
+                <value> <string>976.34271.30288.29832</string> </value>
             </item>
             <item>
                 <key> <string>state</string> </key>
@@ -246,7 +246,7 @@
                     </tuple>
                     <state>
                       <tuple>
-                        <float>1558448080.86</float>
+                        <float>1561044454.34</float>
                         <string>UTC</string>
                       </tuple>
                     </state>