fix race condition which logged out users

frontend/frontend/src/pages/App/AppTrends.js

@@ -67,7 +67,7 @@ function App() {
       if (userKey && userKey.length > 0) {
         const userAccess = await getUserMetadata(userKey);
         if (userAccess === null) {
-          dispatch(_logout());
+          dispatch(_logout(userKey));
         } else {
           setUserAccess(userAccess);
         }

frontend/frontend/src/redux/actions/userActions.js

@@ -6,8 +6,8 @@ export function login(userId, userKey) {
   return { type: LOGIN, payload: { userId, userKey } };
 }
 
-export function logout() {
-  return { type: LOGOUT, payload: {} };
+export function logout(userKey = null) {
+  return { type: LOGOUT, payload: { userKey: userKey } };
 }
 
 export function setUserAccess(token, privateAccess) {

frontend/frontend/src/redux/reducers/user.js

@@ -19,6 +19,12 @@ export default (state = initialState, action) => {
         userKey: action.payload.userKey,
       };
     case types.LOGOUT:
+      if (
+        action.payload.userKey === null ||
+        action.payload.userKey !== localStorage.getItem('userKey')
+      ) {
+        return;
+      }
       localStorage.clear();
       return {
         userId: null,