Font list updates for Edge Fonts

This commit adds Nunito with 3 variants and updates totals to 865 fonts of 502 families.

#1845222: Include license URLs for Edge Fonts changes data format to include license URLs.

This commit:

• Irish Growler has been removed from the list - for the simple reason it was actually a duplicate of Irish Grover :) (if you're using the font under the former name, it still works, at least for now);
• Source Code Pro has a new variant 'Medium';
• some license URLs have changed.