Added initial ask for gradesystem in gradeaverage

lib/storage/gradeAverages/gradeAveragesSettings.g.dart

@@ -10,6 +10,8 @@ GradeAveragesSettings _$GradeAveragesSettingsFromJson(
         Map<String, dynamic> json) =>
     GradeAveragesSettings(
       useGradeSystem: json['useGradeSystem'] as bool,
+      askedForPreferredGradeSystem:
+          json['askedForPreferredGradeSystem'] as bool,
       inputs: (json['inputs'] as List<dynamic>).map((e) => e as int).toList(),
     );
 
@@ -17,5 +19,6 @@ Map<String, dynamic> _$GradeAveragesSettingsToJson(
         GradeAveragesSettings instance) =>
     <String, dynamic>{
       'useGradeSystem': instance.useGradeSystem,
+      'askedForPreferredGradeSystem': instance.askedForPreferredGradeSystem,
       'inputs': instance.inputs,
     };