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/user.js

@@ -9,7 +9,6 @@ import {
   model as Group,
 } from '../../models/group';
 import * as Tasks from '../../models/task';
-import Bluebird from 'bluebird';
 import _ from 'lodash';
 import * as passwordUtils from '../../libs/password';
 import {
@@ -415,7 +414,7 @@ api.deleteUser = {
       return group.leave(user, 'remove-all');
     });
 
-    await Bluebird.all(groupLeavePromises);
+    await Promise.all(groupLeavePromises);
 
     await Tasks.Task.remove({
       userId: user._id,
@@ -1470,7 +1469,7 @@ api.userRebirth = {
 
     toSave.push(user.save());
 
-    await Bluebird.all(toSave);
+    await Promise.all(toSave);
 
     res.respond(200, ...rebirthRes);
   },
@@ -1627,7 +1626,7 @@ api.userReroll = {
     let promises = tasks.map(task => task.save());
     promises.push(user.save());
 
-    await Bluebird.all(promises);
+    await Promise.all(promises);
 
     res.respond(200, ...rerollRes);
   },
@@ -1668,7 +1667,7 @@ api.userReset = {
 
     let resetRes = common.ops.reset(user, tasks);
 
-    await Bluebird.all([
+    await Promise.all([
       Tasks.Task.remove({_id: {$in: resetRes[0].tasksToRemove}, userId: user._id}),
       user.save(),
     ]);