Add penguin icon licence

[malcyL]

Are we now using the green penguin icon in the web client?

To use it we need to comply with the "Freeware Non-commercial (Link Required)" licence.

See: http://findicons.com/icon/49909/penguin

[markhobson]

Yep, as the favicon. Where does the link have to go? In a NOTICE file?

[malcyL]

Good question. It's not very explicit. I think as long as it is somewhere.