Merge remote-tracking branch 'upstream/master'

lib/pages/invoice/invoce_list.dart

@@ -8,6 +8,7 @@ import 'package:fcs/pages/user_search/user_serach.dart';
 import 'package:fcs/pages/widgets/bottom_up_page_route.dart';
 import 'package:fcs/pages/widgets/local_text.dart';
 import 'package:fcs/pages/widgets/progress.dart';
+import 'package:flutter/cupertino.dart';
 import 'package:provider/provider.dart';
 
 import 'package:flutter/material.dart';
@@ -45,7 +46,7 @@ class _InvoiceListState extends State<InvoiceList> {
             appBar: AppBar(
               centerTitle: true,
               leading: new IconButton(
-                icon: new Icon(Icons.close),
+                icon: new Icon(CupertinoIcons.back),
                 onPressed: () => Navigator.of(context).pop(),
               ),
               backgroundColor: primaryColor,