Fixed nonexistent field reference in test model __str__() method.
Fixed nonexistent field reference in test model __str__() method.

takis/django,frankvdp/django,manhhomienbienthuy/django,elena/django,MarkusH/django,claudep/django,shaib/django,solarissmoke/django,monetate/django,fenginx/django,claudep/django,blighj/django,simonw/django,ghickman/django,auvipy/django,ghickman/django,felixxm/django,timgraham/django,rsalmaso/django,schinckel/django,simonw/django,monetate/django,atul-bhouraskar/django,simonw/django,solarissmoke/django,charettes/django,django/django,auvipy/django,wkschwartz/django,atul-bhouraskar/django,wkschwartz/django,googleinterns/django,charettes/django,pauloxnet/django,django/django,ghickman/django,shaib/django,adamchainz/django,dsanders11/django,frankvdp/django,fenginx/django,wkschwartz/django,takis/django,theo-l/django,django/django,kaedroho/django,rsalmaso/django,pauloxnet/django,schinckel/django,freakboy3742/django,apollo13/django,koordinates/django,felixxm/django,theo-l/django,adamchainz/django,googleinterns/django,claudep/django,auvipy/django,blighj/django,shaib/django,simonw/django,schinckel/django,dsanders11/django,apollo13/django,solarissmoke/django,EmadMokhtar/Django,claudep/django,georgemarshall/django,rsalmaso/django,apollo13/django,elena/django,rsalmaso/django,blighj/django,georgemarshall/django,freakboy3742/django,atul-bhouraskar/django,takis/django,elena/django,charettes/django,freakboy3742/django,MarkusH/django,pauloxnet/django,shaib/django,apollo13/django,ghickman/django,fenginx/django,kaedroho/django,georgemarshall/django,fenginx/django,koordinates/django,koordinates/django,googleinterns/django,manhhomienbienthuy/django,EmadMokhtar/Django,googleinterns/django,manhhomienbienthuy/django,pauloxnet/django,timgraham/django,auvipy/django,monetate/django,dsanders11/django,MarkusH/django,koordinates/django,solarissmoke/django,georgemarshall/django,manhhomienbienthuy/django,schinckel/django,kaedroho/django,felixxm/django,frankvdp/django,adamchainz/django,wkschwartz/django,felixxm/django,theo-l/django,timgraham/django,monetate/django,elena/django,MarkusH/django,takis/django,adamchainz/django,timgraham/django,charettes/django,frankvdp/django,blighj/django,atul-bhouraskar/django,theo-l/django,EmadMokhtar/Django,django/django,dsanders11/django