Front: settings persistance (#108)

* Front: Add peristance dependencies

* Front: Fix Cross-platform persistance

* Front: Create Settings Slice

* Front: Use Redux State for settings

* Front: Check if access token is still valid

* Front: Create Language Gate to set correct language at startup

* Front: BEtter handling of Access Token validity

front/App.tsx

@@ -3,20 +3,26 @@ import Theme from './Theme';
 import React from 'react';
 import { QueryClient, QueryClientProvider } from 'react-query';
 import { Provider } from 'react-redux';
-import store from './state/Store';
+import store, { persistor } from './state/Store';
 import { Router } from './Navigation';
 import './i18n/i18n';
+import { PersistGate } from "redux-persist/integration/react";
+import LanguageGate from "./i18n/LanguageGate";
 
 const queryClient = new QueryClient();
 
 export default function App() {
 	return (
 		<Provider store={store}>
-			<QueryClientProvider client={queryClient}>
-				<NativeBaseProvider theme={Theme}>
-					<Router />
-				</NativeBaseProvider>
-			</QueryClientProvider>
+			<PersistGate loading={null} persistor={persistor}>
+				<QueryClientProvider client={queryClient}>
+					<NativeBaseProvider theme={Theme}>
+						<LanguageGate>
+							<Router/>
+						</LanguageGate>
+					</NativeBaseProvider>
+				</QueryClientProvider>
+			</PersistGate>
 		</Provider>
 	);
 }