BAX Demo app

* Get instant access to the last read article by tapping and holding the app icon on the home screen. Available on most devices with Android 7.1+.
* Activate background auto-download of issues, when switching from cellular data to WiFi
* Enable automatic deletion of downloaded magazines after 1 week or 1 month
* Ability to use long-press gesture to enter Selection mode in Library Search.
* Minor fixes, updates, and performance improvements