Updated Flutter SDK for Null-Safety

Ported Progress Detail Screen to PlatformScaffold

Signed-off-by: Andreas Fahrecker <AndreasFahrecker@gmail.com>

lib/ui/settings/color_settings_widget.dart

@@ -6,10 +6,10 @@ class ColorSettingsWidget extends StatelessWidget {
   final void Function(Color) updateDoneColor, updateLeftColor;
 
   ColorSettingsWidget({
-    @required this.doneColor,
-    @required this.leftColor,
-    @required this.updateDoneColor,
-    @required this.updateLeftColor,
+    required this.doneColor,
+    required this.leftColor,
+    required this.updateDoneColor,
+    required this.updateLeftColor,
   });
 
   @override

lib/ui/settings/duration_settings_widget.dart

@@ -6,8 +6,8 @@ class DurationSettingsWidget extends StatelessWidget {
   final void Function(Duration) updateDuration;
 
   DurationSettingsWidget({
-    @required this.duration,
-    @required this.updateDuration,
+    required this.duration,
+    required this.updateDuration,
   });
 
   @override