Fix app_label problem in shuup.testing module
Fix app_label problem in shuup.testing module

Trying to import anything from shuup.testing.factories could result in "RuntimeError: Model class
shuup.testing.models._behavior_components.ExpensiveSwedenBehaviorComponent doesn't declare an
explicit app_label and isn't in an application in INSTALLED_APPS" if done in a Django 1.9 environment.

The changes in this commit seemed to fix it, but at least they will localize the problem instead
of failing on all factories imports

suutari/shoop,shoopio/shoop,shoopio/shoop,suutari/shoop,suutari-ai/shoop,suutari-ai/shoop,shoopio/shoop,suutari/shoop,suutari-ai/shoop