license_name = models.CharField(max_length=255, verbose_name=_('license name'))
license_url = models.URLField(max_length=255, blank=True, verbose_name=_('license URL'))
source_url = models.URLField(verbose_name=_('source URL'))
license_name = models.CharField(max_length=255, verbose_name=_('license name'))
license_url = models.URLField(max_length=255, blank=True, verbose_name=_('license URL'))
source_url = models.URLField(verbose_name=_('source URL'))