Highlight contacts

[fraxken]

Newest version of NodeSecure scanner have the ability to highlights a given list of Contacts (see highlight.Contacts option in cwd/from commands).

This feature is not used yet in the CLI and UI. I think there two tasks here:

• Implement a new CLI argument to provide one or many contacts (auto, cwd and from commands to start).
• Highlight them in the Home view (maybe making them stand first)