Update src/extras/custom-validity.js

modified filter for group-required, not to check for checked disabled inputs
Merge pull request #209 from Gamesh/master

related to issue #208
bump version
remove placeholder with datalistselect (fixes Issue #215)
Merge branch 'master' of github.com:aFarkas/webshim into master2
build
improve flashfallback loading
workaround for chrome change event bug (fixes Issue #214)
correcte download link
version 1.9.7