commit 7e3d6b84 to music123 causes Debian web site validation software to complain

Hi Nicolas,

With commit 7e3d6b84 to music123 you carried out a major refactoring of the
source of your package. This refactoring includes UTF-8 encoding of among
others the l10n files in the po directory of your source.

However the header line
"Content-Type: text/plain; charset=iso-8859-2\n" 
of pl.po hasn't been changed to 
"Content-Type: text/plain; charset=UTF-8\n"
accordingly.

This confuses the validation software of the Debian website and makes it
complain about an invalid numeric character reference in the 
"Last-Translator: Grzegorz Kuśnierz <[email protected]>\n"
header line of pl.po.
Those header lines are parsed in order to be able to compose the
www.debian.org/www/international/l10n/po/pl.xx.html
pages of the website.

Setting
"Content-Type: text/plain; charset=UTF-8\n"
in pl.po 
would solve this problem.