[Tails-dev] Please review and merge doc/wheezy

Ticket: https://labs.riseup.net/code/issues/7451
Branch: doc/wheezy into testing
Target: Tails 1.1

I had a tiny doubt about the removal of the only sentence in
/doc/sensitive_documents but if we really want to describe those global
abstract goals we should find a better place than those index pages that
were 90 % empty.

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sajolida