Few upgraeds

Let look at my few upgrades to your vmail.
Generaly, i've added posibility to specify 'from' value diffrent from 'username'.
Also, i've fixed problem with libnotify.
Libnotify can't display '<' sign, so I've cuted off '<' and '>' from email address.
And the last one. it's up to you, but for me, notify were visible for too short. I prefer to notify not disapear until i clic on it.

P.S.
Sorry for my english :P