Results invalid session when providing an invalid session token (#2154)

* Results invalid session when providing an invalid session token

* Reverts unsafe loggers

* Fixes failing tests

- The tests were failin when run in sequence as we called done() before the JSSDK had a chance to register the session token, therefore having a proper logout call in afterEach

src/Auth.js

@@ -58,7 +58,7 @@ var getAuthForSessionToken = function({ config, sessionToken, installationId } =
     return query.execute().then((response) => {
       var results = response.results;
       if (results.length !== 1 || !results[0]['user']) {
-        return nobody(config);
+        throw new Parse.Error(Parse.Error.INVALID_SESSION_TOKEN, 'invalid session token');
       }
 
       var now = new Date(),