Channel manager: translation provider should load any translation

Unlike navapp translation service layer, channel manager doesn't load any translations for languages that are not predefined:

translateProvider
    .registerAvailableLanguageKeys(['en', 'nl', 'fr', 'de', 'es', 'zh'], {
      'en_*': 'en',
      'nl_*': 'nl',
      'fr_*': 'fr',
      'de_*': 'de',
      'es_*': 'es',
      'zh_*': 'zh',
    });

Adding new language (and .json translations) works fine in navapp layer, so, same service should be used here too.