fixed error where complete entries are shown as incomplete and made ui enhancements to overview

lib/screens/excursion/excursion_main.dart

@@ -584,7 +584,7 @@ class _ExcursionMainState extends State<ExcursionMain> {
                   bool pop = await AddEntriesDialogHelper.showSaveOptionsDialog(
                     context,
                     getFieldsText(),
-                    widget.isTemplate,
+                    isTemplate,
                     DatabasesEnum.excursion,
                   );
                   if (pop && context.mounted) Navigator.of(context).pop();