[Mediawiki-i18n] Translate extension + mediawiki 1.14.1

[Felix Natter]

hi,

the freeplane project (http://freeplane.sourceforge.net) is currently
using mediawiki 1.14.1.
>From this page:
  http://www.mediawiki.org/wiki/Extension:Translate
I derive that it's probably only supported in >= 1.19. Is this true?

What is the easiest way to make this (or a similar extension) work with
mediawiki 1.14.1 (of course while keeping the existing pages)?
Currently we have only English pages, but the Freeplane user base is
growing so we need French pages as well.

Thank you! Best Regards,
-- 
Felix Natter