Remake dashboard

Optimize theme

Optimize more details

Update flutter version

lib/widgets/widgets.dart

@@ -23,3 +23,7 @@ export 'sheet.dart';
 export 'side_sheet.dart';
 export 'subscription_info_view.dart';
 export 'text.dart';
+export 'super_grid.dart';
+export 'donut_chart.dart';
+export 'activate_box.dart';
+export 'wave.dart';