erp5_officejs: new file manifest to list form json urls and other configurations

- this prevents the appcache-local storage sync to store unnecessary resources like gadgets

bt5/erp5_officejs/PathTemplateItem/web_page_module/gadget_officejs_jio_js.js

@@ -100,7 +100,7 @@
           local_sub_storage: {},
           remote_sub_storage: {
             type: "appcache",
-            manifest: "gadget_officejs_discussion_tool.appcache",
+            manifest: "gadget_officejs_discussion_tool.configuration",
             version: "app/",
             take_installer: false
           }

bt5/erp5_officejs/PathTemplateItem/web_page_module/gadget_officejs_jio_js.xml

@@ -234,7 +234,7 @@
             </item>
             <item>
                 <key> <string>serial</string> </key>
-                <value> <string>974.22673.21626.15445</string> </value>
+                <value> <string>974.22753.27435.21418</string> </value>
             </item>
             <item>
                 <key> <string>state</string> </key>
@@ -252,7 +252,7 @@
                     </tuple>
                     <state>
                       <tuple>
-                        <float>1552571020.07</float>
+                        <float>1552575739.83</float>
                         <string>UTC</string>
                       </tuple>
                     </state>