Finished jobs have to send a status email to the mailing list (#45)

This is for issue #45.
I configured the jobs to send emails, similar as we do on mozmill-ci. Make different reg-ex for the mail subject, and I tested it on staging node, because from local node it can't send emails through mozilla smtp server (smtp.mozilla.org)
What we need here is the tests status as overview directly in the email. We don't want to send out emails with only the link to the jenkins job, and attachments. It has to be quickly readable by the person, who checks results.

Also make sure if you test this, you do NOT use the official mailing list. This is disturbing.