Adding basic exemption
Add New settings to the env config.
Merge pull request #1609 from edx/e0d/notifier-vhost

Adding basic exemption
Correct the name of the ansible vars.
Merge pull request #1610 from edx/feanil/social_footer

Add New settings to the env config.
Create course data dir
Merge pull request #1611 from edx/create-course-data-dir

Create course data dir
Cluster all to one machine.

Alsa, add connection logging to rabbitmq.
Get rid of commented task.