add delivery

lib/pages/package/model/package_model.dart

@@ -40,7 +40,7 @@ class PackageModel extends BaseModel {
     logout();
     _menuSelectedIndex = 1;
     _loadPackages(forCustomer);
-    _delivered = _getDeliveredExample(forCustomer);
+    _delivered = _getDelivered(forCustomer);
     _delivered.load();
   }
 
@@ -52,9 +52,8 @@ class PackageModel extends BaseModel {
   }
 
   Future<void> loadMore({bool isCustomer}) async {
-    if (menuSelectedIndex == 1)
+    if (_delivered.ended || menuSelectedIndex == 1)
       return; // when delivered menu is not selected return
-    if (_delivered.ended) return;
     isLoading = true;
     notifyListeners();
     await _delivered.load(onFinished: () {
@@ -92,24 +91,6 @@ class PackageModel extends BaseModel {
     return paginator;
   }
 
-  int count = 0;
-  Paginator _getDeliveredExample(bool onlyFcs) {
-    count = 1;
-    var pageQuery = Firestore.instance
-        .collection(
-            "/users/8OTfsbVvsUOn1SLxy1OrKk7Y_yNKkVoGalPcIlcHnAY/messages")
-        .orderBy("date", descending: true);
-    var paginator = new Paginator(pageQuery, rowPerLoad: 20, toObj: (data, id) {
-      var m = Message.fromMap(data, id);
-      return Package(
-          id: m.id,
-          status: package_delivered_status,
-          trackingID: (count++).toString(),
-          market: m.message);
-    });
-    return paginator;
-  }
-
   Future<void> _loadPackages(bool forCustomer) async {
     if (user == null) return;
     if (!forCustomer &&