Select linked items from search page

- Quickly select related items from the search view
- Include related items with item details to spare another request

modules/webapp/src/main/elm/Util/Item.elm

@@ -38,6 +38,7 @@ toItemLight detail =
     , tags = detail.tags
     , customfields = detail.customfields
     , notes = detail.notes
+    , relatedItems = List.map .id detail.relatedItems
     , highlighting = []
     }