resolved error with 2 related-lookups one after another
resolved error with 2 related-lookups one after another

git-svn-id: b59c7927b41d79a0e21913b231d3b776963b9fa9@209 35d8ae9e-4555-0410-bd5f-97af217b58d9

codysoyland/django-grappelli,chronossc/django-grappelli-svn,chronossc/django-grappelli-svn,codysoyland/django-grappelli