web: fix intermittent "coudln't connect" on page load

was caused by language selector loader, simply added a
"noConnectionError" param to the _get/_post... methods which is enabled
for it.

ts/modules/lang.ts

@@ -88,5 +88,5 @@ export const loadLangSelector = (page: string) => {
             }
             list.innerHTML = innerHTML;
         }
-    });
+    }, true);
 };