Organized Classes, Dogecoin Video tweak, Container Colors, and other tiny changes.

This Pull Request has many changes. This pull request modifies the following...

* Replaces the hard-coded style attributes in the HTML index document with CSS Classes.
* See how clicking the What is Dogecoin video on http://dogecoin.com/ moves the website slightly when you click the button? This fixes it.
* More saturated info container colors.
* Removes bold on "DOGECOIN" title in header, made font size bigger to accommodate for it. This is so it isn't "pixelly" on computer displays.
* Removed extra period typo in meta description.
* Capitalized credits on bottom of page (the lowercase letters doesn't fit the website!).
* Double slash URLs for CDNs without them.

Preview: http://i.imgur.com/g5cZv6e.png
After pressing YouTube video (notice the header container not moving?): http://i.imgur.com/rwU9urk.png