Add missing position property to list and bucket models

src/models/bucket.js

@@ -21,6 +21,7 @@ export default class BucketModel extends AbstractModel {
 			limit: 0,
 			tasks: [],
 			isDoneBucket: false,
+			position: 0,
 
 			createdBy: null,
 			created: null,

src/models/list.js

@@ -43,6 +43,7 @@ export default class ListModel extends AbstractModel {
 			backgroundInformation: null,
 			isFavorite: false,
 			subscription: null,
+			position: 0,
 
 			created: null,
 			updated: null,