- Added requiredPermissions property to the navigation array in the config navigation.php
- Added constant PERMISSION_NAVIGATION_METHOD to NavigationLib
- Added parameter and array element requiredPermissions to method oneLevel of NavigationLib
- Renamed method _sortArray to _sortNavigationArray in NavigationLib
- Added private method _rmNotAllowedEntries to NavigationLib to remove menu entries that the logged user is not allow to use