[Tails-dev] Please review feature/torbrowser

Hi,

no code change, only the new iceweasel in the APT suite.
And even in there, I only had to import the new ESR:
no TBB patch changes.

I'll have to build the 0.18 ISO without waiting for a review, so I'll
merge myself, but still, a review would be much welcome :)

Cheers,
--
intrigeri
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