Refs #7268 -- Added django-admin as an alias in the django-bash-completion...

Refs #7268 -- Added django-admin as an alias in the django-bash-completion script.  Thanks, Raphael Hertzog <hertzog@debian.org>

git-svn-id: http://code.djangoproject.com/svn/django/trunk@7690 bcc190cf-cafb-0310-a4f2-bffc1f526a37