[Catalyst] New default screen for Catalyst.

[Thomas, Mark - BLS CTR]

> 
> > Here's a updated snapshot of the welcome screen:
> >
> >      http://files.oook.de/welcome_now.html
> >
> 
> Looks really good, great work.

Let me ask a content question, from a newbie perspective. The proposed
welcome page says to use the helper scripts for what they are worth, but
where is there a comprehensive list of helper scripts and what they do
so that someone new can determine what they are worth?

- Mark.