Improve GDPR configuration

[georgejipa]

https://wordpress.org/support/topic/gdpr-policy-page/

[georgejipa]

Let's introduce a template tag (e.g.: {privacy_page_url}) for the privacy page URL and automatically replace it with the actual URL on the frontend.

This form collects your name and email so that we can reach you back. Check out our <a href="{privacy_page_url}">Privacy Policy</a> page to fully understand how we protect and manage your submitted data.