Adding in sample GWT app DynaTable to tweak it

Original source code = http://code.google.com/p/google-web-toolkit/source/browse/trunk/samples
Original demo = http://gwt.google.com/samples/DynaTable/DynaTable.html
Parent listing page = http://www.gwtproject.org/examples.html

references sumeetpareek/gwt-sample-work#1