Implement banking system features and enhancements

- Added banking mode with checking, savings, and charity accounts, including auto-split options for income.
- Introduced banking transaction management, including transfers and charity outflows.
- Updated family settings to allow configuration of banking features and interest rates.
- Enhanced data export functionality to include bank transactions.
- Improved user interface to display banking information and donation goals.
- Updated documentation to reflect new banking features and settings.

index.php

@@ -7,7 +7,7 @@ require_once 'includes/family_settings.php';
 
 startFamilyHubSession();
 
-$people = normalizePeopleList(readJsonFile('people.json'));
+$people = migrateAllPeople(normalizePeopleList(readJsonFile('people.json')));
 if (getActivePersonId() !== null && getActivePerson($people) === null) {
     clearPersonaSession();
 }