Moved modelHelpers service in the DataSources module

Change-Id: Ife4239d8f0ca0ec12ed7db17c337deb6e06e80fe
diff --git a/src/app/datasources/index.ts b/src/app/datasources/index.ts
index 7a14a9a..b6897ed 100644
--- a/src/app/datasources/index.ts
+++ b/src/app/datasources/index.ts
@@ -5,12 +5,12 @@
 import {StoreHelpers} from './helpers/store.helpers';
 import {SynchronizerStore} from './stores/synchronizer.store';
 import {ModeldefsService} from './rest/modeldefs.rest';
-import {xosCore} from '../core/index';
+import {ModelHelpers} from './helpers/model.helpers';
 
 export const xosDataSources = 'xosDataSources';
 
 angular
-  .module('xosDataSources', ['ngCookies', 'ngResource', xosCore])
+  .module('xosDataSources', ['ngCookies', 'ngResource'])
   .service('ModelRest', ModelRest)
   .service('AuthService', AuthService)
   .service('WebSocket', WebSocketEvent);
@@ -18,6 +18,7 @@
 angular
   .module('xosDataSources')
   .service('StoreHelpers', StoreHelpers)
+  .service('ModelHelpers', ModelHelpers)
   .service('SynchronizerStore', SynchronizerStore)
   .service('ModelStore', ModelStore)
   .service('ModelDefs', ModeldefsService);