[PATCH] Add 'd'elete keybinding to search and show views

[Jesse Rosenthal]

Hey Jamie,

> There's been some discussion on this, and I think Carl's
> position (sorry if I'm putting words in your mouth, Carl) was to just
> settle on the tag "deleted" for this concept (of deleted messages) and
> stick with it.  

If it's been thought through and there's some consensus, I'll
defer. It's not something that I feel all that strongly about.

> Jesse, can you think of a reason why it would really be better to allow
> customization for this?

No really convincing reasons. I guess I was mainly going by the vague
intuition that this level of configurability just somehow seems more
emacs-y. And that emacs users (me, I guess) might expect it from an
emacs app. 

Also, I guess I'm just wary of any hard-coding in of tags.  Since we
can't foresee the future, or other people's specific email usage
patterns. It's less about this one tag, and more about having any
literal tags in the code. And, I'll be the first to admit, more a
general wariness than a thought-out position.

But, as I said, I'll gladly defer to people who have thought this
through more thoroughly (and, for that matter, to people who would use
this feature).

Best,
Jesse