PW WooCommerce Gift Cards Pro 3.1

- Fixed a conversion issue when using the Price Based on Country for WooCommerce plugin by Oscar Gare.

- Added a new option to not display the Gift Card Applied message when clicking the Redeem button. To disable this message, set PWGC_SHOW_GIFT_CARD_APPLIED_MESSAGE_FROM_REDEEM_BUTTON to false in wp-config.php

- Improved the cart_contains_gift_card() function so it can be used in the back end. Added a hook to change the configuration parameters for the PDF generation.