[MERGE][1.16] Added directory structure and started translation of docs in Russian.

[Dmitry Vasiliev]

Vincent Ladeuil wrote:
> Only minor concerns, mostly I'd like some comments added,
> congrats for leading that effort that far already !
> 
> BB:tweak
> 
> I can't read Russian but I ran the tests and 'make doc' locally,
> all went fine, so my review is only about the doc build process.

Vincent, thank you for review!

> There are some duplication with the quick-reference/Makefile in
> the doc/[es|en|ru] directories.
> 
> You don't need to address that, but a comment in the
> en/quick-reference/Makefile along the lines:

I believe we'll address that in the next patch.

-- 
Dmitry Vasiliev (dima at hlabs.spb.ru)
   http://hlabs.spb.ru