dlang.org should do it in style

[Andrei Alexandrescu via Digitalmars-d]

I just created 
https://github.com/D-Programming-Language/dlang.org/pull/769, which 
shifts the majority of dlang.org's look and feel to CSS styles.

With this work in tow, we get to use classic CSS styling to improve the 
look and feel of the site.

Please review. I'll be also looking forward to new styling ideas!


Andrei