WooCommerce Product Vendors 2.2.8

* Fix - Product name for simple type shows not found in commission list.
* Fix - Order date discrepancies.
* Fix - Shipping address formatting issue when empty on vendor orders list.

* Fix - When save post hook is called, sometimes vendor selection is removed.
* Fix - Vendor ID not saving into customer's meta.

* Fix - On commission process, rare duplicate commission line could be created.
* Fix - Vendor registration description field showing up in vendor profile.