Added automatic update-merge of settings for new settings instead of falling back to defaults

lib/main.dart

@@ -95,8 +95,6 @@ class _MainState extends State<Main> {
             themeMode: settings.val().appTheme,
             theme: LightAppTheme.theme,
             darkTheme: DarkAppTheme.theme,
-
-
             home: Consumer<AccountModel>(
               builder: (context, accountModel, child) {
                 switch(accountModel.state) {