Fix app loading in django 1.9 like in #419.
Fix app loading in django 1.9 like in #419.

product-definition-center/product-definition-center,product-definition-center/product-definition-center,release-engineering/product-definition-center,release-engineering/product-definition-center,product-definition-center/product-definition-center,release-engineering/product-definition-center,release-engineering/product-definition-center,product-definition-center/product-definition-center