add changes in invoice_service

Author: vadym-k21

editable-invoice/backendless/applogic.js

@@ -1,4 +1,5 @@
-Backendless.initApp("PUT-YOUR-APP-ID-HERE", "PUT-YOUR-JS-SECRET-KEY-HERE", "v1");
+Backendless.serverURL="http://localhost:9000";
+Backendless.initApp("2E09EB02-FD57-7EA6-FF29-65844A152100", "4DA09BF9-5B36-5FAD-FF79-514797E08A00", "v1");
 
 $('document').ready( function() {
     // bootstrap & render App
@@ -7,7 +8,7 @@ $('document').ready( function() {
     try{
         renderApp(App.store.invoices.find({
             options:{
-                related: ["items"]
+                relationsDepth: 1
             }
         }).data);
     } catch(e){