GD Press Tools is a collection of various administration, seo, maintenance, backup and security related tools that can help with everyday blog tasks a
Lite version has only partial support for the multi site installations. Allowing access to plugins Database options is not reccomended for individual blogs, and SiteAdmin should disable this on the plugins General Settings tab. If you need full support for Multisite installations, upgrade plugin to PRO version: http://d4p.me/gdpt.
Lite version is regularly maintained, but it doesn't include any kind of support beyond bug fixing. If you need support, upgrade plugin to PRO edition and get much more additional features.
You only need POEdit program that works on Windows, Linux and MacOS. Instructions on how to make or update translations are here: http://d4p.me/wa.