Fix Bug 913704: Add GA & Click Tracking

forgot to add classes to hp

Removed unecessary return statements per pr request.

Fixed classnames, added helper function.

Fixed PR change - hard coded _trackEvent.

Refactored helper function based on PR feedback.
Merge pull request #60 from bensternthal/google-analytics

Fix Bug 913704: Add GA & Click Tracking
Bug 913672: Careers - Splash/Intro

HTML, CSS and image assets for splash part of home page.

Moving to icon font for icons, small changes to carousel to support that.
Bug 913676 - Careers: Teams & Roles