Merge pull request #31 from qubell/develop

Merge develop branch
Remove unexisting policies parameter for workflow service
Merge pull request #32 from qubell/fix-workflow

Remove unexisting policies parameter for workflow service
Remove unexisting policies parameter for workflow service
instance contains only sandbox instances
Version update
Zone support and generate vault key only if needed
Merge pull request #35 from dmakhno/zone-support

Zone support and generate vault key only if needed
Merge 'master' into 'develop'

Conflicts:
	qubell/api/private/testing/__init__.py
revision refactoring