feat(rxAccountInfo): Add rxAccountInfo component

This component is Rackspace-specific for showing account info and
badges, but also serves as a useful example for how to use rxInfoPanel.

This also brings `resource-helpers.js` in (hat tip to @halkon) to help with mocking services in unit tests.
I'd honestly rather see this renamed to `href`, since that's the typical nomenclature used in Selenium.