UNDO moving all interfaces to adhocracy.interfaces, use adhocracy.contents/propertysheets.interfaces
rest api: test cases for complex content objects
added vagrant file to kickstart development with a virtual machine
Merge branch 'master' of github.com:adhocracy/adhocracy-3

Conflicts:
	src/adhocracy/adhocracy/docs/rest_api.rst
	src/adhocracy/adhocracy/interfaces.py
Merge branch 'master' into mf-2013-10-17-frontend-cleanup

Conflicts:
	src/adhocracy/adhocracy/contents/__init__.py
	src/adhocracy/adhocracy/contents/interfaces.py
	src/adhocracy/adhocracy/docs/rest_api.rst
	src/adhocracy/adhocracy/propertysheets/__init__.py
	src/adhocracy/adhocracy/propertysheets/interfaces.py