erp5_core: Fix target proxy fields

Previous field names came from obsoleted erp5_core_proxy_field_legacy

product/ERP5/bootstrap/erp5_core/SkinTemplateItem/portal_skins/erp5_core/BaseType_viewAction/listbox_title.xml

@@ -71,7 +71,7 @@
               <dictionary>
                 <item>
                     <key> <string>field_id</string> </key>
-                    <value> <string>my_title</string> </value>
+                    <value> <string>my_view_mode_title</string> </value>
                 </item>
                 <item>
                     <key> <string>form_id</string> </key>

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

@@ -82,7 +82,7 @@
                 </item>
                 <item>
                     <key> <string>field_id</string> </key>
-                    <value> <string>your_date</string> </value>
+                    <value> <string>my_date_time_field</string> </value>
                 </item>
                 <item>
                     <key> <string>form_id</string> </key>

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

@@ -82,7 +82,7 @@
                 </item>
                 <item>
                     <key> <string>field_id</string> </key>
-                    <value> <string>your_date</string> </value>
+                    <value> <string>my_date_time_field</string> </value>
                 </item>
                 <item>
                     <key> <string>form_id</string> </key>

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

@@ -82,7 +82,7 @@
                 </item>
                 <item>
                     <key> <string>field_id</string> </key>
-                    <value> <string>your_date</string> </value>
+                    <value> <string>my_date_time_field</string> </value>
                 </item>
                 <item>
                     <key> <string>form_id</string> </key>

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

@@ -82,7 +82,7 @@
                 </item>
                 <item>
                     <key> <string>field_id</string> </key>
-                    <value> <string>your_date</string> </value>
+                    <value> <string>my_date_time_field</string> </value>
                 </item>
                 <item>
                     <key> <string>form_id</string> </key>