Had some inspiration today in the morning how to get all user (admin) committed variables translated. Some are not really useful to localize, but better all than none, right?
How is it working?
As described here and here Variables are localized,atm all Ubercart related I found.
The difference is that you don't need to copy this code any more into settings.php, but it is initialized through hook_init()
Additional I added some Site and User variables which where floating around on d.o
Attributes are still not touched by this contrib, also the Catalog issue is still not addressed.