[website redesign] PR for the one with the big red menu bar

[anonymous via Digitalmars-d]

PR: https://github.com/D-Programming-Language/dlang.org/pull/869 
- For details see here.
Live version: http://ag0aep6g-dlang.rhcloud.com - If you've 
visited this before, you may have to clear your cache to see the 
proper logo color.