Return of the message-level stars.

Fixes b/16563881 by enabling starring/unstarring via
the message header overflow. Also restores the behavior
where starred messages are expanded when you open the conversation.

Fixes b/16349888 by turning off the conversation-level stars
in CV.

Also fixes b/17432202 where the message header overflow wasn't properly
aligned with the action bar overflow.

Also noticed a super-collapsed bug where we weren't properly resetting
state on bind.

Change-Id: I39d7ef7b49f13aad62895e743effe76c707510f0
13 files changed