fixed bug in autoregister where attribute searching didn't search deep enough (didn't search base classes)
fixed bug in autoregister where attribute searching didn't search deep enough (didn't search base classes)

Signed-off-by: Jannis Leidel <jannis@leidel.info>

git-svn-id: b99a46c07fbf8805b07d24f0d19d882f5b77273e@49 4ed3a04f-053e-0410-b24d-b35526dee1fc

bennylope/django-mobileadmin,bennylope/django-mobileadmin