Refs #8467 -- Added test for RelatedManager.add()/remove() with an invalid type.
Refs #8467 -- Added test for RelatedManager.add()/remove() with an invalid type.

MarkusH/django,simonw/django,googleinterns/django,rsalmaso/django,shaib/django,kaedroho/django,dsanders11/django,shaib/django,blighj/django,solarissmoke/django,pauloxnet/django,elena/django,koordinates/django,takis/django,solarissmoke/django,freakboy3742/django,monetate/django,atul-bhouraskar/django,blighj/django,ghickman/django,MarkusH/django,felixxm/django,apollo13/django,adamchainz/django,simonw/django,manhhomienbienthuy/django,monetate/django,pauloxnet/django,ghickman/django,adamchainz/django,takis/django,wkschwartz/django,wkschwartz/django,solarissmoke/django,pauloxnet/django,ghickman/django,manhhomienbienthuy/django,django/django,simonw/django,dsanders11/django,manhhomienbienthuy/django,googleinterns/django,MarkusH/django,shaib/django,dsanders11/django,kaedroho/django,kaedroho/django,atul-bhouraskar/django,atul-bhouraskar/django,simonw/django,takis/django,atul-bhouraskar/django,felixxm/django,manhhomienbienthuy/django,koordinates/django,apollo13/django,theo-l/django,MarkusH/django,auvipy/django,pauloxnet/django,monetate/django,theo-l/django,freakboy3742/django,wkschwartz/django,django/django,claudep/django,elena/django,dsanders11/django,auvipy/django,rsalmaso/django,shaib/django,elena/django,rsalmaso/django,adamchainz/django,takis/django,theo-l/django,claudep/django,theo-l/django,django/django,auvipy/django,wkschwartz/django,rsalmaso/django,elena/django,felixxm/django,adamchainz/django,auvipy/django,felixxm/django,monetate/django,claudep/django,solarissmoke/django,freakboy3742/django,blighj/django,googleinterns/django,googleinterns/django,koordinates/django,apollo13/django,koordinates/django,blighj/django,ghickman/django,claudep/django,django/django,apollo13/django