[Inkscape-translator] more languages and win32 installer

Hello all,

there have been a recent number of new po-languages.

In order to reflect the new languages in the installer selection we need to update the installer language files. They are not part of the inkscape.po and so must be modified manually. I already updated the english and german, pls check the comment on top of the english one. Also if you want to create a new installer language grab the english version and translate the strings :-)

Thanks,

Adib. --