Fixed #8194: `AdminForm.first_field` now correctly returns the first field when using custom field orders.
Fixed #8194: `AdminForm.first_field` now correctly returns the first field when using custom field orders.

git-svn-id: 554f83ef17aa7291f84efa897c1acfc5d0035373@8681 bcc190cf-cafb-0310-a4f2-bffc1f526a37

svn2github/django,svn2github/django,svn2github/django