Fix wrong relation.
Fix wrong relation.

It's already used in Kwc_NewsCategory_Category_Directory_NewsToCategoriesModel
but was not in Kwc_NewsCategory_Model. For this reason it was not possible
to listen to changes (event.php-listener) in Kwc_NewsCategory_Category_Directory_NewsToCategoriesModel.

koala-framework/koala-framework,koala-framework/koala-framework