Update to new libcloud 0.14.0 release! Woot!
	modified:   requirements.txt
New method get_admin_driver added to service.driver.

* Changed previous implementation to use the get_admin_driver method.
* Refactored any complex code around use of get_admin_driver.
* PEP8 Compliance. (/shame sTEVe)

	modified:   api/occupancy.py
	modified:   core/application.py
	modified:   core/tasks/instance.py
	modified:   service/driver.py
	modified:   service/tasks/machine.py
Merge branch 'master' of github.com:iPlantCollaborativeOpenSource/atmosphere