Greg 87 invitation logout

Støtte for "utlogging" fra invitasjonslenker

frontend/src/contexts/userContext.ts

@@ -12,6 +12,7 @@ function noop() {}
 export const UserContext = createContext<IUserContext>({
   user: {
     auth: false,
+    auth_type: '',
     fetched: false,
     first_name: '',
     last_name: '',