added collapsable classes into report sheet

[Pavel Tisnovsky]

Jiri Vanek wrote:
> 
> 2011-06-22 Jiri Vanek <jvanek at redhat.com>
> 
>     * tests/report-styles/jreport.xsl: part with classes statistics is
> now collapsable
> 

Hi Jiri,

this change looks good for me assuming that negateIdDisplay() JavaScript
function works as I expect :-)

Cheers,
Pavel

btw: ccllaasseess? ;-)