Add i18n support, PyPI proxy, and UI improvements

- Add Russian/English language switcher with cookie persistence
- Add PyPI proxy support with caching (like npm)
- Add height limits to Activity Log and Mount Points tables
- Change Cargo icon to delivery truck
- Replace graphical logo with styled text "NORA"
- Bump version to 0.2.11

nora-registry/src/ui/api.rs

@@ -215,7 +215,7 @@ pub async fn api_dashboard(State(state): State<Arc<AppState>>) -> Json<Dashboard
         MountPoint {
             registry: "PyPI".to_string(),
             mount_path: "/simple/".to_string(),
-            proxy_upstream: None,
+            proxy_upstream: state.config.pypi.proxy.clone(),
         },
     ];