FormCraft - 高端 WordPress 表单构建器 3.9.16

1. Fixed XSS bug
2. Added nonce checks across more endpoints

Fixed cross-site scripting vulnerability

Bug fixes

1. Fix file upload type vulnerability
2. Fix export permissions vulnerability

Fixed text_domain issue

Fix to dedicated form page URL

Fix for signature pad

Security fix

Bug fix

Fix a bug where the validation script wasn't loading in the correct order