Node 8 (WIP) (#9946)

* start upgrade to node 8

* upgrade travis

* improve travis

* Remove bluebird, babel (except for modules) from server (WIP) (#9947)

* remove bluebird, babel from server (except for modules)

* fixes

* fix path

* fix path

* fix export

* fix export

* fix test

* fix tests

* remove plugin for transform-object-rest-spread since it is supported in node8

* babel: correct syntax rest spread

* remove bluebird

* update migrations archive readme

* fix package-lock.json

* fix typo

* add package-loc

website/server/controllers/api-v3/members.js

@@ -18,7 +18,6 @@ import {
   getUserInfo,
   sendTxn as sendTxnEmail,
 } from '../../libs/email';
-import Bluebird from 'bluebird';
 import { sendNotification as sendPushNotification } from '../../libs/pushNotifications';
 import { achievements } from '../../../../website/common/';
 
@@ -552,7 +551,7 @@ api.transferGems = {
     receiver.balance += amount;
     sender.balance -= amount;
     let promises = [receiver.save(), sender.save()];
-    await Bluebird.all(promises);
+    await Promise.all(promises);
 
     // generate the message in both languages, so both users can understand it
     let receiverLang = receiver.preferences.language;