[MERGE] Add Mutt as a supported email client (round 2)

[Aaron Bentley]

Aaron Bentley has voted approve.
Status is now: Semi-approved


For details, see: 
http://bundlebuggy.aaronbentley.com/request/%3Cef5675f30709041204j276ce48biaa5095a939bc5749%40mail.gmail.com%3E