UI loading improvements

Fixed: Caching for dynamically loaded JS files
Fixed: Incorrect caching of initialize.js
(cherry picked from commit f0cb5b81f140c67fa84162e094cc4e0f3476f5da)

frontend/src/bootstrap.tsx

@@ -0,0 +1,21 @@
+import { createBrowserHistory } from 'history';
+import React from 'react';
+import { render } from 'react-dom';
+import createAppStore from 'Store/createAppStore';
+import { fetchTranslations } from 'Utilities/String/translate';
+import App from './App/App';
+
+export async function bootstrap() {
+  const history = createBrowserHistory();
+  const store = createAppStore(history);
+  const hasTranslationsError = !(await fetchTranslations());
+
+  render(
+    <App
+      store={store}
+      history={history}
+      hasTranslationsError={hasTranslationsError}
+    />,
+    document.getElementById('root')
+  );
+}