Improve tails-iuk error reporting for developers
tails-install-iuk fails, its stdout and stderr is nowhere to
be found. This eats precious developer time, and should be improved.
The root cause of the problem may be that gksudo hides
stderr. One could workaround this
somehow, or have
fatal method log to a
temporary file, whose path could be mentionned in the error message
displayed to the user.
Feature Branch: bugfix/better-error-reporting