[Seaside] WAProcessRenderingContinuation and HTML-only

[Philippe Marschall]

2009/9/11 Robert Shiplett <grshiplett2 at yahoo.com>
>
> WAProcessRenderingContinuation
>
>   >>processRendering: aResponse
>
> defaults to
>
>        >>createHtmlRootWithContext
>
> which in turn is
>
> >>createHtmlRootWithContext: aRenderContext
>    ^WAHtmlRoot context: aRenderContext            "not consistent with non-SGML markup"

Make a subclass, is configurable on WAApplication.

Cheers
Philippe