Page callback: Display the current translation status.
function locale_translation_status() {
$languages = locale_translatable_language_list();
if (!$languages) {
drupal_set_message(t('No translatable languages available. <a href="@add_lanuage">Add language</a> first.', array(
'@add_lanuage' => url('admin/config/regional/language'),
)), 'warning');
}
// @todo Calculate and display the translation status here. See the follow-up
// issue for translation interface: http://drupal.org/node/1804702
return 'TODO: Show the translation status here';
}