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/AdminSidebar.tsx

@@ -15,6 +15,7 @@ import {
 import { useQuery } from '@tanstack/react-query';
 import { useTranslation } from 'react-i18next';
 import { settingsService } from '../../services/settings.service';
+import { VersionInfo } from './VersionInfo';
 
 interface AdminSidebarProps {
   isOpen: boolean;
@@ -89,8 +90,14 @@ export const AdminSidebar: React.FC<AdminSidebarProps> = ({ isOpen, onClose }) =
           })}
         </nav>
 
-        {/* Storage Info */}
-        <StorageInfo />
+        {/* Bottom section - sticky to bottom */}
+        <div className="mt-auto">
+          {/* Version Info */}
+          <VersionInfo />
+          
+          {/* Storage Info */}
+          <StorageInfo />
+        </div>
       </div>
     </div>
   );