Revision 1685132

Second pass due to local problem :/ . Resynchronise template macro form xml, text, csv and fo from html related to issue OFBIZ-6461.
adding unit test that call webtools/control/WebtoolsLayoutDemo with html, text, csv, xml and fop render and detect on the stream if an FTl stacktrace is present.
The fop test is currently commented because the screenfop failed to generate WebtoolsLayoutDemo page.
To support the unit case, the screen engine has been extend to manage platform-specific : <text> and <csv>