add group-property to TaskType and use it to show the code

neonView/TaskPreview_view/TaskPreview_view.aod

@@ -60,6 +60,8 @@
     <neonViewReference>
       <name>2941084f-b72c-4cb2-9d73-5e6827795be2</name>
       <entityField>MainDocuments</entityField>
+      <view>DocumentList_view</view>
+    </neonViewReference>
     <genericViewTemplate>
       <name>Description</name>
       <showDrawer v="true" />
@@ -73,7 +75,5 @@
         </entityFieldLink>
       </fields>
     </genericViewTemplate>
-      <view>DocumentList_view</view>
-    </neonViewReference>
   </children>
 </neonView>