[Webtest] build 430

[Dierk Koenig]

Hi,

I committed some work on the selftest organization.
The goal is to give users a jump start for file/folder organization that
worked well for us in our big projects.
I kept all the old tests but started a new folder "/selftests" in the cvs
module that now contains the webtest selftests.
still todo: include the auto-refresh test and include the whole structure in
the distribution.

I introduced a "group" step for grouping of steps.
Thomas Jezler submitted the JS that is used in the new reporting style for
folding of groups. Thanks a lot for that.

cheers
Mittie