[TYPO3-doc] Review of doc_core_skinning

[Fabien Udriot]

> Actually you need both ;-)

:)

Done!

> The one about official documentation is generic and indicates that the manual is part of the
> official documentation. Then there's a choice between the 3 others, and indeed doc_core_skinning is
> a "Core" manual.

Makes sense

>> What else should be changed regarding the styles? It comes across to me
>> to be quite similar.
>
> Yes they are. It's mostly the general structure and the possible use of callout boxes in the text
> (BTW I was thinking of changing these a bit, but I haven't had time yet).

Fine, it is case the document's styles stick pretty well to the latest one. I don't use special 
call-out boxes yet (warning, notice, ...) but it may change it the future.

Fb.