73739189c5
When rolling out #25477, we dropped hundreds of email activation tasks due to the renaming of student.send_activation_email to common.djangoapps.student.send_activation_email, and lost more when we rolled that PR back. This happens because of blue/green deployment: old workers are still online for a while after deploying, so there is a period of time when the task names are mismatched. To prevent this from happening again, this will make it so the import changes don't change the names of any of the Celery tasks.
common ------ This directory contains common code shared between LMS and CMS, such as Mako templates, CSS, and Coffescript.