fix New Relic team promo UI problems - Bounty #440

[New Relic team page UI bugs - Bounty 440](https://assembly.com/coderwall/bounties/440)
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- un-hide the promo copy
- show the entire promo t-shirt image
- align promo copy with image
- move call to action to the right side per @mdeiters' request

With these fixes, it looks like this
![team_new_relic___coderwall_com](https://cloud.githubusercontent.com/assets/987305/5328414/b3bb8ea2-7d38-11e4-8fd9-9f882735215c.png)