Support for meinVZ, StudiVZ and SchülerVZ (german services)

Add the .png to the images folder and to german_services.module following code:

$links['_de_meinvz'] = array(
'name' => 'MeinVZ'
'description' => t('Share on MeinVZ, StudiVZ or SchuelerVZ.'),
'link' => 'http://www.studivz.net/Link/Selection/Url/?u=&desc=',
);