Splash changes

- Renaming CSS and JS files to remove version numbers
- Changing the margin-bottom of h2
- Using JSON to get the "data circles" working as suggested [here](https://github.com/Brickimedia/brickimedia/issues/151#issuecomment-32097601)
- Adding in "social-links" div to surround the social links (padding-top is applied to the new div)