Permissions for commerce_product
Issue #2323775 Define data_tables for our translatable entities

- Rename the language field on the product entity from language to langcode
- Define a data_table for our translatable entities, this is enforced now because of https://www.drupal.org/node/2322097
Merge pull request #39 from joshuataylor/commerce-product-add-permissions

Permissions for commerce_product
Merge pull request #41 from Jbekker/add-data_table-definition

Issue #2323775 Define data_tables for our translatable entities
Initial tests for the commerce_store and commerce_store_type entities