hash based routing in env file

ref #23

src/App.svelte

@@ -7,6 +7,11 @@
   });
   console.log($router.path);
   console.log(config);
+  if (config.prefersHashRouting) {
+    if (config.prefersHashRouting === true) {
+      router.useHashNavigation();
+    }
+  }
   import localForage from "localforage";
   import { addMessages, init, getLocaleFromNavigator } from "svelte-i18n";
   import en from "./locales/en.json";