Added XML <template> tests
Added tests from <http://html5.org/tools/web-apps-tracker?from=7419&to=7420>
Updated charref parse error tests (HTML revision 7679)
Added <main> tests (HTML revision 7680)
Added NULL tests (HTML revision 7949)
fixed doctype tests
Added <dialog> tests (c.f. HTML revision 7050)
Added <dialog> tests (HTML revision 7050)
Updated surrogate tests (HTML revision 8182)
Added <button type=menu> tests (HTML revision 7602)
Drop <command> and added <menuitem> (HTML revision 7640, HTML revision 7871)