Persisted logged out state

Reviewed By: passy

Differential Revision: D28788916

fbshipit-source-id: 88ca6a069d4915e71cd7c271b6bbbea37838f4f5

desktop/app/src/fb-stubs/user.tsx

@@ -38,7 +38,7 @@ export async function graphQLQuery(_query: string): Promise<any> {
   throw new Error('Feature not implemented');
 }
 
-export function logoutUser(): Promise<void> {
+export function logoutUser(_persist: boolean = false): Promise<void> {
   throw new Error('Feature not implemented');
 }