Incorrect import generated for a Django app that is a subpackage

[jklaiho]

When a Django app package is a subpackage of a non-app package, dumpdata generates an incorrect import for that package.

For example:

parent
|___ first_app
|      |___ models.py
|___ second_app
|      |___ models.py
...

The generated import should be from parent.first_app.models import SomeModel, but instead it's just from first_app.models import SomeModel, which is incorrect. What's worse, this should actually be an ImportError, but the loaddata processing is eating it somehow and "No fixtures found." is printed, adding to the confusion.

The problem lies in the simplistic app name / model name combining logic to create the import rows, located in the dump_class_fixtures() function of utils/serialization.py.