E0d/xqwatcher fixes

Remove NLTK_DATA environment var from ORA celery

Update the ORA2 deploy script to restart workers

changing source_type

adding the option to run on a single ip

no spaces in default license

Use the unzip function since.

Feanil/enable codejail

Unarchive is not the right function since it is for transferring archives from the local machine to the remote one.

task_tags should be optional

changing common dd var

Install NLTK for edxapp workers

updating newrelic, dd, splunk flag names

Add dependencies for edxapp and ora on the NLTK role
Install minimal NLTK data used by EASE

Add celery flower role

Link course data to location where edxapp looks for code.

The codejail settings are also updated so that tmp files work.

This also allows the codejail process to be able to rm the sandbox users's
temp directory using sudo since it would not have permission otherwise.

The application looks for course code inta a directory named after the
course name so we are symlinking the course repo to that directory as
well.

Adding port 587 for SMTP to InboundSMTPPublicNetworkAclEntry and NATSecurityGroup

Initial commit, works for happy path.

Adding tags arg for ansible

Be more explicit when failed to connect on sqs or ec2