About to drop in generated docs from the new 'tuxpaint-docs' repository.
As the directories will have more explicit names (e.g., "fr_FR.UTF-8"
rather than just "fr") and Spanish ("es") and French ("fr") already
exist (though they are very basic samples, 99+% untranslated so far),
renaming the current directories to match.
Using the SVG-based "Tux Paint" title text at the top of HTML docs
(replacing ancient, totally-mouse-drawn one from 2002).
Also, while I was in there, added big "out of date" notices,
with links to English documentation, in outdated translated ones.
