Add a setup file that configures the React adapter. Fix one deprecated usage for ProjectLoaderHOC tests.

There are some tests still broken, but these weren't called out by Enzyme.

Move green flag test to containers directory to make it clearer it's testing the container and not the component.

- Add documentation on how to run tests.

WIP getting a react test working. Throws syntax error on svgs so need to maybe configure jest to use existing webpack config instead which probably properly handles svgs.
- added additional plugins to get tests working

\o/ Successfully got hello world of jest working on windows (in windows cmd line). For some reason git bash doesn't work.