Well this looks nice, though ultimately only the change finder is useful in my opinion.
I mean, even if you use the translator to automatize the translation, you still need a file with the whole translation, which is the same as distributing the translated files themselves.
Especially when the lines are still to be translated, it's the same amount of work.
By the way, would it be possible to have a special option in the change finder to output differences in the diff format (maybe to standard output rather than a file)?
My editor has a special mode for that and it's very comfortable looking at changes through that.