Add instances tests

nc-52
Merge branch 'develop' of code.opennodecloud.com:nodeconductor/nodeconductor into feature/nc-52
Add user specific fields filtering
Add ips and uptime to the Instance model
Merge develop branch

nc-52
Add serializer for administrator of project

nc-52
Add list filtration and direct access tests

nc-2
Add creation, mutation, deletion tests, factory

nc-2
Add image model and view

nc-2
MySQL backend support added (NC-77), dependencies fixed, settings template improved
Typo
Merge branch 'develop' into feature/nc-2
Depend on djangosaml2

NC-89
Add attribute mappings

NC-89
Add serializer Base64Field

NC-89
Remove deprecated blank=True options from fields
Add  simplistic SAML2 based DRF auth backend

NC-89
Code cleanup

nc-2
Merge branch 'feature/nc-2' into 'develop'

Feature/nc 2
Merge branch 'develop' into feature/nc-52

Conflicts:
	nodeconductor/iaas/views.py