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

test/helpers/api-integration/v3/object-generators.js

@@ -1,7 +1,6 @@
 import {
   times,
 } from 'lodash';
-import Bluebird from 'bluebird';
 import { v4 as generateUUID } from 'uuid';
 import { ApiUser, ApiGroup, ApiChallenge } from '../api-classes';
 import { requester } from '../requester';
@@ -106,7 +105,7 @@ export async function createAndPopulateGroup (settings = {}) {
     guild: { guilds: [group._id] },
   };
 
-  let members = await Bluebird.all(
+  let members = await Promise.all(
     times(numberOfMembers, () => {
       return generateUser(groupMembershipTypes[group.type]);
     })
@@ -114,7 +113,7 @@ export async function createAndPopulateGroup (settings = {}) {
 
   await group.update({ memberCount: numberOfMembers + 1});
 
-  let invitees = await Bluebird.all(
+  let invitees = await Promise.all(
     times(numberOfInvites, () => {
       return generateUser();
     })
@@ -126,9 +125,9 @@ export async function createAndPopulateGroup (settings = {}) {
     });
   });
 
-  await Bluebird.all(invitationPromises);
+  await Promise.all(invitationPromises);
 
-  await Bluebird.map(invitees, (invitee) => invitee.sync());
+  await Promise.all(invitees.map((invitee) => invitee.sync()));
 
   return {
     groupLeader,