slapos_cloud: Show Computer Reference on HostingSubscription_view listbox

master/bt5/slapos_cloud/SkinTemplateItem/portal_skins/slapos_cloud/HostingSubscription_view.xml

@@ -118,6 +118,7 @@
                         <string>my_destination_section_title</string>
                         <string>my_slap_state_title</string>
                         <string>my_translated_validation_state_title</string>
+                        <string>listbox_aggregate_parent_reference</string>
                       </list>
                     </value>
                 </item>

master/bt5/slapos_cloud/SkinTemplateItem/portal_skins/slapos_cloud/HostingSubscription_view/listbox.xml

@@ -134,6 +134,10 @@
                           <string>aggregate_parent_title</string>
                           <string>Computer</string>
                         </tuple>
+                        <tuple>
+                          <string>aggregate_parent_reference</string>
+                          <string>Computer Ref.</string>
+                        </tuple>
                         <tuple>
                           <string>getAggregateTitle</string>
                           <string>Computer Partition</string>