Create privacy category

[soulgalore]

A couple of the advice in best practice is privacy advice. We should create a new privacy category and move the advice to that category + add a couple of more advice.

At the moment we have:

• use HTTPS
• use STS header
• use referrer-policy header
• do not use GA
• do not use AMP
• do not use Youtube
• do not use Facebook
• show third party % and warn if you load assets from 3rd parties
• mixed content

What I plan to add:

• do not use google fonts/other include from Google domains

What more should we have for the coming release?

This will be super useful for all users and extra good for all the users we have in the public sector.

[soulgalore]

This is ready to go for 3.0.