Don't report error in case of dropped gadgets.

Previous page's service can generate errors (in case of listbox for example).
No need to report the error to the user, as he already switched to a new page.

bt5/erp5_web_renderjs_ui/PathTemplateItem/web_page_module/rjs_gadget_erp5_js.xml

@@ -176,7 +176,8 @@
     console.error(error);\n
     console.error(error.stack);\n
     // XXX Improve error rendering\n
-    gadget.props.article.textContent = "Error: " + error_text;\n
+    gadget.props.article.innerHTML = "<br/><br/><br/><pre></pre>";\n
+    gadget.props.article.querySelector(\'pre\').textContent = "Error: " + error_text;\n
   }\n
 \n
   function displayError(gadget, error) {\n
@@ -305,7 +306,12 @@
       this.props.header_argument_list = param_list;\n
     })\n
 \n
-    .allowPublicAcquisition(\'reportServiceError\', function (param_list) {\n
+    .allowPublicAcquisition(\'reportServiceError\', function (param_list, gadget_scope) {\n
+      if (gadget_scope === undefined) {\n
+        // don\'t fail in case of dropped subgadget (like previous page)\n
+        // only accept errors from header, panel and displayed page\n
+        return;\n
+      }\n
       return displayError(this, param_list[0]);\n
     })\n
 \n
@@ -569,7 +575,7 @@
             </item>
             <item>
                 <key> <string>serial</string> </key>
-                <value> <string>938.273.44627.4590</string> </value>
+                <value> <string>938.5954.37249.58333</string> </value>
             </item>
             <item>
                 <key> <string>state</string> </key>
@@ -587,7 +593,7 @@
                     </tuple>
                     <state>
                       <tuple>
-                        <float>1412347942.24</float>
+                        <float>1412758687.11</float>
                         <string>GMT</string>
                       </tuple>
                     </state>