add a general test runner for wagtail, accessible by running './runtests.py' or 'make test' from the wagtail repo, or 'manage.py test wagtail' from a django project such as wagtaildemo
Merge branch 'master' of github.com:torchbox/wagtail
apparently we don't need imports in tests/__init__.py
ensure that test-static gets torn down even if tests fail
temporarily disable outdated wagtailembeds test