Extended timeout, hipchat and email notification when process hangs

Test Plan: No logic changes
Small change: extended timeout, hipchat and email notification when process hangs

Test Plan: No logic changes

Reviewers: jace, mattfaus

Differential Revision: http://phabricator.khanacademy.org/D2833
Response to code review

More info in msg, comment noting 3hr timeout

Test Plan: Fingers crossed :)