update application.html to latest boilerplate changes

see HTML5Boilerplate Changelog:
https://github.com/h5bp/html5-boilerplate/blob/master/CHANGELOG.md
update tests for application.html changes
update typekit integration for valid html
update test for typekit integration changes
Merge pull request #45 from screenconcept/features/update_boilerplate

update application.html to latest boilerplate changes