Consideration for disabling/trimming referrers within TBB

As per zyan's reply here (https://trac.torproject.org/projects/tor/ticket/9623#comment:23), I've created a new ticket.

It is definitely worth considering disabling referrer / trackers within TBB as it seems the security concerns (trackability/linkability) are [much] greater than the possiblity of occasional breakage on a few websites.

Possibly disable + include a way to toggle referrer on for particular site temporarily? Just an idea, needs to be examined for what would be the best solution.