[Tails-l10n] Git history rewrite

Hi folks,

I want to make you all aware that we will be rewriting the git history
of tails.git, our main git repository. To make it easy for everybody and
have less pain for us or for yourself in the future. I would like to ask
you to push any local branches you might have laying around, even if the
work isn't finished, to the git repo.

Please do not postpone! :-)

All the best,
Jurre