dataTable edit mode

[Thomas Spiegl]

As there were a lot of questions regarding data tables edit mode i 
changed the master detail example a bit. You can now add & remove rows 
dynamically when editing the country table.
(see http://irian.at/myfaces/countryTableForm.jsf)

You can test the recently added JavascriptListener by Martin at 
http://irian.at/myfaces/jslistener.jsf:.

Thomas