Implement `Tag.save()` to auto-create the reverse child-parent links when modifying tags in the django admin.
Implement `Tag.save()` to auto-create the reverse child-parent links when modifying tags in the django admin.

WillianPaiva/1flow,1flow/1flow,1flow/1flow,WillianPaiva/1flow,1flow/1flow,1flow/1flow,WillianPaiva/1flow,1flow/1flow,WillianPaiva/1flow,WillianPaiva/1flow