Download page and D docs defaulting to D2

[Christopher Wright]

Brian Hay wrote:
> Christopher Wright wrote:
>> These issues are fixed. Yay! The obvious links that I can find are, 
>> anyway.
> 
> Not quite. Everything in the left sidebar still links to D2 by default. 
> There should also be some notice on the new home page that D1 is stable 
> whereas D2 is not. At the moment they aren't differentiated and people 
> will naturally select the D2 link assuming it is better and safe to use.

Well, yes, and at the very least all the links should specify whether 
it's D1 or D2. And the download page will make it clear which version to 
use.