slapos_panel: display the discussion in read only mode

master/bt5/slapos_panel/SkinTemplateItem/portal_skins/slapos_panel/SubscriptionRequest_viewOnSlaposPanel/discussion_thread.xml

@@ -10,6 +10,7 @@
             <key> <string>delegated_list</string> </key>
             <value>
               <list>
+                <string>default</string>
                 <string>gadget_url</string>
                 <string>renderjs_extra</string>
                 <string>title</string>
@@ -79,6 +80,10 @@
             <key> <string>values</string> </key>
             <value>
               <dictionary>
+                <item>
+                    <key> <string>default</string> </key>
+                    <value> <string>fake_to_make_it_visible_in_erp5js_read_only</string> </value>
+                </item>
                 <item>
                     <key> <string>field_id</string> </key>
                     <value> <string>my_gadget_field</string> </value>