[erp5_core] Move listbox fields into the hidden group

product/ERP5/bootstrap/erp5_core/SkinTemplateItem/portal_skins/erp5_core/Base_viewFieldLibrary.xml

@@ -54,7 +54,6 @@
                 <string>center</string>
                 <string>bottom</string>
                 <string>hidden</string>
-                <string>not_assigned</string>
               </list>
             </value>
         </item>
@@ -77,7 +76,16 @@
                 <item>
                     <key> <string>hidden</string> </key>
                     <value>
-                      <list/>
+                      <list>
+                        <string>my_list_mode_listbox_creation_date</string>
+                        <string>my_list_mode_listbox_description</string>
+                        <string>my_list_mode_listbox_modification_date</string>
+                        <string>my_list_mode_listbox_owner_title</string>
+                        <string>my_view_mode_module_listbox_creation_date</string>
+                        <string>my_view_mode_module_listbox_description</string>
+                        <string>my_view_mode_module_listbox_modification_date</string>
+                        <string>my_view_mode_module_listbox_owner_title</string>
+                      </list>
                     </value>
                 </item>
                 <item>
@@ -151,12 +159,6 @@
                       </list>
                     </value>
                 </item>
-                <item>
-                    <key> <string>not_assigned</string> </key>
-                    <value>
-                      <list/>
-                    </value>
-                </item>
                 <item>
                     <key> <string>right</string> </key>
                     <value>