Hi,
Excellent. I made a test build of the translation, so that you can see what it looks like.
http://lokalisointi.org/~magi/itmill/book/polish/book-pl/preface.html
,
http://lokalisointi.org/~magi/itmill/book/polish/book-of-vaadin-pl.pdf
Oh, about the Preface, it was just recently edited for the new print edition, so it mentions the print edition a bit unnecessarily. Maybe we should have a separate book.xml for the print edition or something.
If you have the poxml installed, you should be able to build the HTML manual with:
$ svn co http://dev.vaadin.com/svn/doc/trunk doc
$ svn co http://dev.vaadin.com/svn/incubator/docs/polish-translation doc/manual/translations/pl_PL
$ cd doc/build
$ ant localized-docs
The result will be in result/package/WebContent/docs/book-pl directory.