In order to run qunit tests on sources that use common.js modules, set
up infra to run qunit tests in the node cli when running:
npm run test:node
Changes:
* Add npm script test:node that runs the tests
* Run node tests on CI (npm test)
* Add a qunit node test runner: mw-node-qunit
* Migrate a test from the root hierarchy and another one from the nested
one to prove it works (globs fail otherwise)
* reducers/settings.test.js to node qunit to prove it works
* counts.test.js to node qunit to prove it works
Change-Id: I55d76b7db168f3745e0ac69852c152322ab385c3
