Try to get celery working.
	modified:   atmosphere/celery.py
Merge branch 'master' of github.com:iPlantCollaborativeOpenSource/atmosphere
Celery works! Configure and 3.1.x changes.
	modified:   atmosphere/settings/__init__.py
	modified:   atmosphere/wsgi.py
	modified:   requirements.txt
	modified:   service/allocation.py
	modified:   service/task.py
	modified:   service/tasks/driver.py
Merge branch 'master' of github.com:iPlantCollaborativeOpenSource/atmosphere