Ultimate Membership Pro 12.8

- Improve Stripe Checkout Cancel process
- Improve Stripe API compatibility
- Improve JS front-end workflow
- Improve Coupon discount for Limited level type on Stripe
- Fix List Access Posts limit workflow
- Fix API Gate "get_user_posts" call workflow
- Fix Warnings during user editing process
- Fix Level Badges display on front-end
- Fix Woo Payment Integration module
- Fix Account Page top message default value
- ADD extra CSS style on front-end
- Update Languages files

Fixed: License was not working (Thanks to @Hirostein for the report #69 )

- Improve system performance
- Improve Stripe Checkout payment workflow
- Improve PayPal Standard payment workflow
- Improve PayPal Express Checkout payment workflow
- Improve UMP Dashboard style
- Improve UMP Dashboard user experience
- Improve Frontend Showcases
- Improve Compatiblity with WP 5.4.
- Improve Compatibility with PHP 7.4.x
- Improve Initial Setup data
- Improve extra Modules activation process
- Improve User editing workflow
- Fix Notifications content management
- Fix special characters on custom messages
- Fix Stripe amount for specific currencies
- Fix cuomst attributes into Register page URL
- ADD Compatiblity with LocoTranslate plugin
- ADD Environment verification process
- ADD Default Country value option
- ADD Extra details on Users table