Bug 871450 - [Email] Cached contact info is not automatically updated by notifications from the mozContacts API; stale info can be shown
Have change notification tests double the live peeps for paranoia.

I was worried we might not be firing notifications for all live peeps, this
checks that.
more test paranoia, inert clone support for message-reader use-case
fix bcc test
rename function per review comment and IRC discussion
Merge pull request #213 from asutherland/update-contacts

Bug 871450 - [Email] Cached contact info is not automatically updated by notifications from the mozContacts API; stale info can be shown. r=squib