[TWN team] numerize script on the wiki

[Lunar]

harmony:
> I took the liberty of adding Lunar's useful numerize.rb script to the
> wiki pages. I fixed it to work with the colons we now add to footnotes.
> 
> https://trac.torproject.org/projects/tor/wiki/TorWeeklyNews/Numerize

Thank you. I should have done that before. :)

I've added the `linkify` script that I use to prepare the blog posts.

-- 
Lunar                                             <lunar at torproject.org>
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