- Rename services.
- Move configuration into plugin manager.

- All files reported by licensecheck[https://metacpan.org/pod/App::Licensecheck] were fixed.

- Adjusted wiki links to point to latest URLs.
- Removed VuFind2 category name (use generic VuFind instead).

- Introduce DEFAULT_SEARCH_BACKEND constant.
- Deprecate now-redundant getResourceSource() record driver method.
- Implement upgrade functionality to adjust database.
- Resolves VUFIND-1139.

Includes integration test.

Resolves VUFIND-663.

Renamed 'logger' service to 'VuFind\Logger' to avoid conflicts; updated all logger-dependent classes to use Zend\Log\LoggerAwareInterface; set up standard initializer for main service manager and other factories.

Prefixed plugin manager service names with "VuFind\" as first step toward best-practice naming for global services.

Use explicit dependency injection for ILS authentication module instead of relying on service locator.

Split searchspecs reading away from standard config reader; made new class non-static for service manager integration; updated tests to match.