WordPress Coding Standard 2.0 removed the sniff
WordPress.Security.NonceVerification.NoNonceVerification:
```
The WordPress.Security.NonceVerification sniff used the same error code for both an error as well as a warning.
The old error code NoNonceVerification is no longer used.
The error now uses the Missing error code, while the warning now uses the Recommended error code.
```
(from
d45f5e5cf3/CHANGELOG.md (200-rc1---2018-12-31))
This commit updates WooCommerce code and replaces all instances where WordPress.Security.NonceVerification.NoNonceVerification verification was used with either WordPress.Security.NonceVerification.Missing or
WordPress.Security.NonceVerification.Recommended. In a few cases WordPress.Security.NonceVerification.NoNonceVerification was used but was not needed, so instead of replacing the sniff, the line was removed. In two other cases, I removed other unrelated sniffs that were not needed.
The name of one of the WPCS sniffs changed from WordPress.CSRF.NonceVerification.NoNonceVerification to WordPress.Security.NonceVerification.NoNonceVerification. This commit updates all instances where this sniff is used in WooCommerce codebase.
Fixed notice:
```
PHP Notice: Only variables should be passed by reference in includes/admin/importers/class-wc-product-csv-importer-controller.php on line 298
```
When the file is empty or using an incorrect charset will display just an empty screen, since we output errors before check if the file is valid.
I included the error output inside the mapping step in order to fix this issue, and added a new option to display buttons after the error message.
Closes#16928
* Introduce woocommerce_product_csv_importer_args filter.
* Add extra args to WC_Product_CSV_Importer. Have fgetcsv use extra args
* Update to follow coding standards.
- Rearranged fields to make easy to find
- Grouped price fields
- Include context to "Stock" since could means different things depending on the language