setForeignKey doc does not match behavior of the code

[agateau-g]

The documentation for QDjangoModel::setForeignKey() says it takes ownership of the QObject* value argument, but what the code does is assign value as a property of the model instance, and this is not taking ownership: a QObject does not delete its properties when it is deleted.

I think the code is doing the right thing, but the doc should be fixed.

[jlaine]

You are right the docs are out of date, it used to be that setForeignKey took ownership but this caused too many problems, I will fix it