[cgiow] (1) Allow inputmode='' on type=password, so that you can set the input mode to numeric for PIN passwords
Fixing https://www.w3.org/Bugs/Public/show_bug.cgi?id=23419
Affected topics: HTML

git-svn-id: http://svn.whatwg.org/webapps@8211 340c8d12-0b0e-0410-8428-c7bf67bfef74