Create a tails-installer-launcher
create a tails-installer-launcher that only proposes these two options:
* add support for “install from ISO”
* make sure “upgrade from ISO” works outside of Tails
Feature Branch: u451f:liveusb-creator/feature/jessie_launcher_2
Parent Task: #8556 (closed)
Original created by @u on 9380 (Redmine)