context-menu option on tab that adds domain to Auto Faviconize list

[Cathryne]

I'm using your addon mostly because of the Auto Faviconize option. It works absolutely well once the rules are defined :-) To make this rule definition easier however, I would like to suggest to add an Auto Faviconze Tab option to the context-menu that automatically adds the proper rule for a domain (with subdomain). Thank you!