* Use electron-builder API instead of cli and remove build config from package.json

* Fix Windows setup file name

After electron-builder update, productName is prefered over package
name. This commit reverts that.

* Add Windows installer bitmaps

* Move Windows installer script

* Update the list of platforms which autoUpdater can be run

* Improve handling of update and auto update

* Add feature to force update settings from app to user

* Add check if user can set auto update setting

* Fix artifactName for macOS builds