[e] (0) Examples for method='', including method=dialog
Fixing https://www.w3.org/Bugs/Public/show_bug.cgi?id=23434
Affected topics: CSS, HTML

git-svn-id: http://svn.whatwg.org/webapps@8339 340c8d12-0b0e-0410-8428-c7bf67bfef74