Bulk Table Editor for WooCommerce 2.5.8

* Minor bug fix in filter by tags

* Added option to set the query order and orderby in settings
* Allow 0 for fixed amount in bulk functions
* Performance optimalization - product query / fetching products
* Added color coding for on sale items - orange edit icon
* Added German translation pot file
* Minor fixes and improvements

* Added option in setting for hide: edit product (button), edit description, hide settings and other values