* develop: (51 commits)
  [FIX] Use Electron notifications (#1101)
  [FIX] Updates preloads scripts to be compatible with Rocket.Chat >0.74.0 (#1099)
  Update gulp
  Update dependencies
  [IMPROVE] i18next (#1096)
  [IMPROVE] New tray icons (#1093)
  [CHORE] Remove unused styles (#1092)
  [IMPROVE] Remove update-remind-later-dialog (#1076)
  Fix for basic-auth servers connect (#1074)
  Fix remember window state on load (#1080)
  Update provisioning profile
  Disable artifact collection by AppVeyor (#1081)
  Add workaround for webview readiness
  update dependencies electron => 4.0.1
  [improve] resolve requested changes
  Replace istanbul with nyc
  Work around icon window in e2e tests
  Add missing id in menu item
  Enable tests in CI
  Fix e2e tests
  ...

* Relax autoplay policy to allow sound notifications

* Resolve notification icon URL

* Use Electron Notification API

* Add tests for notifications module

* Fix gulp tasks

* Fix i18n error string

* Fix webview initialization bug

* Remove idle time detection

* Fix and isolate title change detection

* Update external links handling

* Test window.reloadServer existence before invoking it

* Update Jitsi preload script

* Replace env module with process.env.NODE_ENV

* Refactor i18n module

* Remove pluralization

* Fix i18n imports

* Normalize locale strings

* Fix wrong dialog title

* Remove unused strings

* Change i18n string interpolation

* Update i18n keys

* Move empty menu to menus module

* Add i18next

* Allow asynchronous initialization of i18n

* Refactor i18n initialization

* Deactivate i18n initialization in test mode

* Add new tray icons for MacOS

* Add new tray icons for Linux

* Add new tray icons for Windows

* Remove option to show user status in tray icon

* Remove old icon module

* Don't use gulp to update icons

* Optimize tray icons

* Refactor icon module

* Build app icons

* Refactor and test icon module

* Fix Windows icons

* Update dependencies

* Remove Fontello

* Remove unused less module

* Remove update-remind-later-dialog

* Remove update_remind language strings [de]

Remove "Update_remind_message" and "Update_remind" language strings.

* Remove update_remind language strings [en]

Remove "Update_remind_message" and "Update_remind" language strings.

* Remove update_remind language strings [fr]

Remove "Update_remind_message" and "Update_remind" language strings.

* Remove update_remind language strings [ja]

Remove "Update_remind_message" and "Update_remind" language strings.

* Remove update_remind language strings [pt]

Remove "Update_remind_message" and "Update_remind" language strings.

* Remove update_remind language strings [ru]

Remove "Update_remind_message" and "Update_remind" language strings.

[NEW] Support for MacBooks Touch Bar

[CHORE] Fix broken tests

[IMPROVE] Pages and preload script changes