> Theres a way for me download the .po files? using git, svn, ...
Get a copy of Koha from its git repository. Use this instructions:
http://wiki.koha.org/doku.php?id=en:development:git_usage
.po files are in misc/translation/po subdirectory.
Direct access here: http://tinyurl.com/y86zjkb
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Frédéric DEMIANS