protz/GMail-Conversation-View — pull request #473 by shirosaki (2011-10-16 11:50:41+00:00)
Title: Display security info for Enigmail

In classic view, the message's security infomation about decryption and
signature is displayed at the header bar. And icons are displayed at
bottom right of the window. This patch adds the feature to conversation
view.

This feature would be useful because we can see verified signature
information in conversation view without opening classic view.

There are some clenaups. "this" variable isn't change without call() at
Enigmail.msg function. It makes else statements consistent with other
code.

This contains some monkey patches of Enigmail because `updateHdrIcons`
related feature is designed not to work when multiple messages are selected.
Could you check it?