E2E test fixups (#2045)

* Reinstall reporter and re-enable skipped tests

* Fixups for Linux

* Mac fixes

* Windows fixes

* Use keyboard shortcuts instead of menu for most menu actions

* Couple fixes

* One more fix for now

* Windows fixes

* Lint fixes

* Change up developer tools tests to be more consistent

* Fix key for mac

* Couple fixes for flaky tests/to avoid crashes on unload

e2e/specs/mattermost/back_button.test.js

@@ -7,7 +7,7 @@ const fs = require('fs');
 const env = require('../../modules/environment');
 const {asyncSleep} = require('../../modules/utils');
 
-describe('Menu/window_menu', function desc() {
+describe('back_button', function desc() {
     this.timeout(30000);
 
     const config = {