Call the task decorator instead of creating a new method directly.
Clean up the applicability regeneration task, and the task loading work.
Merge branch 'rbarlow-distributed_tasks' into rbarlow-create_celery_tasks
Get unit tests to pass.
Convert repository publish into a Celery task.
Merge branch 'rbarlow-distributed_tasks' into rbarlow-create_celery_tasks
Convert the repo_delete() method into a Celery Task.
Converted remove_distributor() and update_distributor_config() into Celery Tasks.
Remove a stray print statement.
Fix some PEP-8 violations, and some typos in comments.