[Seaside] canvas translator & new version of Seafox

[Christoph J. Bachinger]

Very nice tool and works fine with Chrome.

but does not work with Firefox 6.02

There is no paste possibility at text box below the default "Rendered 
html" tab. The text box does not activate and shows no input prompt.

>
> Note: I've tested mainly on the Mac in Safari. I'd be interested to 
> hear different platform browser combinations work.
>
>