A first attempt at RPC for instance stopping
Improved admin views
Enable django_fsm as installed app
Proof of concept for Instance lifecycle management
Exclude deleted VMs from the view
Filter keys owned by the user
Skip tests for async operations
Modify mock task to update instance IP
Background transaction handling revamped

NC-51
Drop deprecated viewset's "model" attribute

In DRF 2.4 this is going to be deprecated, accommodate in advance.

See http://www.django-rest-framework.org/topics/2.4-announcement#deprecation-of-`model`-view-attribute
for more details.
Drop deprecated DEFAULT_MODEL_SERIALIZER_CLASS setting

In DRF 2.4 this is going to be deprecated, accommodate in advance.

See http://www.django-rest-framework.org/topics/2.4-announcement#deprecation-of-`model`-view-attribute
for more details.
Refactor start/stop/delete background tasks
Merge branch 'prepare-for-drf-2.4' into 'develop'

Prepare for DRF 2.4

This still doesn't bump the version, but is rather a forward-compatible change to the existing code that would happily run on both DRF 2.3 and 2.4.
Merge branch 'develop' of code.opennodecloud.com:nodeconductor/nodeconductor into feature/nc-51

Conflicts:
	nodeconductor/iaas/views.py
Fix logging arguments
Reduce ordering fields
Merge branch 'feature/nc-51' into 'develop'

Feature/nc 51 - IaaS service mgmt commands