[notmuch] Git feature branch

[Sebastian Spaeth]

As I do like some of the additional patches, I am shoving some of them
into my "all feature" branch. I make that one available in case you
want to pull from it. It currently carries:

Jameson Rollins: Simplify "unread" tag handling in emacs UI.
David Bremner: notmuch.el: Refactor citation markup. Variables for minimum size, button text.
Dirk-Jan C. Binnema: notmuch-new.c: refactor and improve dirs-to-ignore a bit
Sebastian Spaeth: add notmuch-show-delete keybinding 'd'

www: http://github.com/spaetz/notmuch-all-feature
git: git://github.com/spaetz/notmuch-all-feature.git

Sebastian