Fixed some unit tests and add test step to run on Windows/Mac builds (#2466)

* Fixed some unit tests and add test step to run on Windows/Mac builds

* Update failing test

* Fix backlash

* Fix windows run

* Fix Windows again

Co-authored-by: Tasos Boulis <tboulis@hotmail.com>
Co-authored-by: Mattermod <mattermod@users.noreply.github.com>

e2e/specs/downloads/downloads_manager.test.js

@@ -3,6 +3,7 @@
 'use strict';
 
 const fs = require('fs');
+
 const robot = require('robotjs');
 
 const env = require('../../modules/environment');

e2e/specs/startup/app.test.js

@@ -4,8 +4,6 @@
 
 'use strict';
 
-const robot = require('robotjs');
-
 const env = require('../../modules/environment');
 const {asyncSleep} = require('../../modules/utils');