Great, there will surely be updates required ;-) Please see my comment on the pull request as I couldn't use it directly.

Sure, you can place download links as you like or even host them yourself if you wish.

Of course I will try to keep the translation updated, as long as I can.

BTW, the download link is here http://www.antonioranesi.it/news/traduzione-ita-zenphoto-1.4.7

Thanks, will post about it soon.