Set up environment to run tests

Install dependencies

OS-level dependencies, use whatever install procedure works on your OS:

curl (for nodeenv)
chrome (the Google browser, for testacular)
Make yourself a virtual environment, and activate it
Install python packages with pip install -r requirements/test.txt
Make yourself a node environment within the virtualenv with nodeenv -p (this installs node and npm and takes quite a while)
Install node packages with scripts/nodereqs.py (this installs the required files listed in requirements/nodeenv.txt)