Global test setup

Configure chai and SandboxedModule globally with options used in many
tests.

That required upgrading mocha and SandboxedModule.

services/document-updater/test/unit/js/ProjectManager/getProjectDocsTests.js

@@ -11,8 +11,6 @@
  * Full docs: https://github.com/decaffeinate/decaffeinate/blob/master/docs/suggestions.md
  */
 const sinon = require('sinon')
-const chai = require('chai')
-const should = chai.should()
 const modulePath = '../../../../app/js/ProjectManager.js'
 const SandboxedModule = require('sandboxed-module')
 const Errors = require('../../../../app/js/Errors.js')
@@ -25,10 +23,6 @@ describe('ProjectManager - getProjectDocsAndFlushIfOld', function () {
         './RedisManager': (this.RedisManager = {}),
         './ProjectHistoryRedisManager': (this.ProjectHistoryRedisManager = {}),
         './DocumentManager': (this.DocumentManager = {}),
-        'logger-sharelatex': (this.logger = {
-          log: sinon.stub(),
-          error: sinon.stub()
-        }),
         './HistoryManager': (this.HistoryManager = {}),
         './Metrics': (this.Metrics = {
           Timer: (Timer = (function () {