feat(preferences): no-subscription for non logged in users (#676)

* feat(preferences): no-subscription for non logged in users

* fix: check if user has account using application.hasAccount()

app/assets/javascripts/preferences/panes/account/SignOutView.tsx

@@ -96,8 +96,7 @@ export const SignOutWrapper: FunctionComponent<{
   application: WebApplication;
   appState: AppState;
 }> = observer(({ application, appState }) => {
-  const isLoggedIn = application.getUser() != undefined;
-  if (!isLoggedIn)
+  if (!application.hasAccount())
     return (
       <ClearSessionDataView appState={appState} application={application} />
     );