YITH WooCommerce Advanced Reviews Premium 2.4.0

* New: Support for WooCommerce 3.9
* Update: plugin framework
* Fix: deleted unnecessary schema code for reviews in the reviews shortcode template
* Dev: new filter 'yith_ywar_redirect_after_submit_review'
* Dev: new filter 'yith_ywar_show_review_shortcode_without_product_id'

* Update: Italian language
* Update: plugin framework
* Fix: fixed the issue with the duplicate product short description
* Fix: option panel changes

* New: Support to WordPress 5.2.3
* New: Added pagination to yith_ywar_show_reviews shortcode
* Tweak: Added a new color option to change the "Most recent reviews" and "Most helpful reviews" tab
* Tweak: New improvements in the reviews shortcode
* Update: plugin framework
* Update: updated .pot file
* Update: updated the Google Schema in the reviews
* Fix: fixed the edit message when the edit is not allowed
* Dev: adding a new filter to redirect the voting login
* Dev: fixed a minor issue in the yith_ywar_show_reviews shortcode