[wiki:sfGuardDoctrinePlugin]: Removed duplicate created_at columns
[wiki:sfGuardDoctrinePlugin]: Removed duplicate created_at columns

git-svn-id: 458549b61d641b773df908b6a934c52040a706e1@4543 ee427ae8-e902-0410-961c-c3ed070cd9f9

krzyc/sfDoctrineGuardPlugin