Update notifications/sms|email endpoint to send the template version to the queue.
Update the process_job celery talk to send the template version to the queue.
When the send_sms|send_email task runs it will get the template by id and version.
Created a data migration script to add the template_vesion column for jobs and notifications.
The existing jobs and notifications are given the template_version of the current template.
There is a chance this is the wrong template version, but deemed okay since the application is not live.
Create unit test for the dao_get_template_versions method.
Rename /template/<id>/version to /template/<id>/versions which returns all versions for that template id and service id.
This PR removes the need for the email_safe function. The api does not create the email_from field for the service.
Tests were updated to reflect this change.
