[MlMt] Behavior upon clicking notification

[John D. Muccigrosso]

Currently if you click on a notification about a new message, MM2 
activates, switches to Inbox, and highlights that messages.

I'd prefer it simply activate and open that message. I'm not normally in 
Inbox (I use smart mailboxes a lot), and what I want to do is read the 
message, not see it in a list.

Bonus: allow for a "Delete" option right from the notification.

Thanks!

John