Updated contact copy, centered panels, de-emphasized FAQ and Support buttons

WIP #94
https://assemblymade.com/coderwall/wips/94

* Added new requested copy.
* Added "We call it crowd-founding" from the blog post.
* Centered panels properly
* De-emphasized the FAQ and Support buttons and used the flat button style.


Before:
![coderwall___contact_us](https://cloud.githubusercontent.com/assets/197892/3394176/04df7464-fcd9-11e3-9303-a0da3a84f26f.png)

After:
![coderwall___contact_us_and_using_vagrant_for_rails_development_-_gorails](https://cloud.githubusercontent.com/assets/197892/3394166/e469d684-fcd8-11e3-9205-b61410a6dc2a.png)