Add a owner field to the store.

- Move some of the form field definitions to the BaseFieldDefinition on the entity.
- Coding style fixes in the store tests
Adjust forms to reflect core changes, small cleanup.

- Changed submit() to submitForm() on entity delete forms.
- Replaces all occurrences of watchdog() with the logger.
Merge pull request #70 from Jbekker/fix-forms

Adjust forms to reflect core changes, small cleanup.
Merge pull request #69 from Jbekker/add-store-owner

Add a owner field to the store.
Entity form and view modes moved from Entity module to Core

- Core change notice: https://www.drupal.org/node/2335315
Merge pull request #72 from Jbekker/remove-entity-dependency

Entity form and view modes moved from Entity module to Core
Rename FieldInstanceConfig to FieldConfig as for https://www.drupal.org/node/2312093
Merge pull request #73 from pcambra/2312093_rename_fieldinstanceconfig

Rename FieldInstanceConfig to FieldConfig
Update commerce_price to commerceguys/intl class name changes.
Merge pull request #74 from mglaman/intl-repository-change

Update commerce_price to commerceguys/intl class name changes.