Tor Launcher is not localized

Originally created by @anonym on #16338 (Redmine)

Regression introduced when migrating to Tor Browser 8.x in Tails 3.9~rc1 (Tails 3.8 with the last Tor Browser 7.5.x release is fine).

Feature Branch: bugfix/16338-tor-launcher-localization+force-all-tests

Edited May 15, 2020 by anonym

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