Initial updates to make tests run with Intern 2

Note that intern is now expected to be installed within the dgrid directory.
Convert functional test calls to Leadfoot APIs
Update Intern-related docs and fix a lingering typo
Add bower support and allow using npm install to install intern-geezer

* Add bower.json
* Remove cpm-related dependencies from package.json
* Add intern-geezer to devDependencies in package.json
* Update README