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/admin/VersionInfo.tsx

@@ -0,0 +1,44 @@
+import React from 'react';
+import { useQuery } from '@tanstack/react-query';
+import { useTranslation } from 'react-i18next';
+import { Info } from 'lucide-react';
+import { api } from '../../config/api';
+
+// Frontend version from package.json
+const FRONTEND_VERSION = '1.0.0';
+
+interface SystemVersion {
+  backend: string;
+  frontend: string;
+  node: string;
+  environment: string;
+}
+
+async function fetchSystemVersion(): Promise<SystemVersion> {
+  const response = await api.get<SystemVersion>('/api/admin/system/version');
+  return response.data;
+}
+
+export const VersionInfo: React.FC = () => {
+  const { t } = useTranslation();
+  const { data: versionInfo } = useQuery({
+    queryKey: ['system-version'],
+    queryFn: fetchSystemVersion,
+    staleTime: 5 * 60 * 1000, // Cache for 5 minutes
+  });
+
+  return (
+    <div className="px-4 py-3 border-t border-neutral-200">
+      <div className="flex items-center gap-2 text-xs text-neutral-600">
+        <Info className="w-3 h-3" />
+        <span className="font-medium">{t('admin.version')}</span>
+      </div>
+      <div className="mt-1 space-y-0.5 text-xs text-neutral-500">
+        <div>Frontend: v{FRONTEND_VERSION}</div>
+        {versionInfo && (
+          <div>Backend: v{versionInfo.backend}</div>
+        )}
+      </div>
+    </div>
+  );
+};