feat: Add comprehensive system enhancements

- Add version display above storage consumption in admin sidebar
- Fix storage consumption to stick to bottom of window using flexbox
- Add user upload settings to events (allow uploads, category selection)
- Enhance disk space tab to comprehensive system status view
- Add localized date formatting for German/English language support
- Remove quick actions from dashboard for cleaner interface
- Create user photo upload functionality for galleries
- Add database migration for user upload settings
- Update all TypeScript types and interfaces

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

frontend/src/components/gallery/index.ts

@@ -4,4 +4,5 @@ export { PhotoLightbox } from './PhotoLightbox';
 export { ExpirationBanner } from './ExpirationBanner';
 export { CountdownTimer } from './CountdownTimer';
 export { GalleryLayout } from './GalleryLayout';
-export { PhotoFilterBar } from './PhotoFilterBar';
+export { PhotoFilterBar } from './PhotoFilterBar';
+export { UserPhotoUpload } from './UserPhotoUpload';