Change modal dialog title from h1 (which is bad for SEO) to h2

[jyaus]

(for Vistaprint ticket SF-9583)

• Change the modal dialog title from an h1 to an h2, and style it via a CSS class

Also:

• Provide .css versions of stylesheets, which our documentation says we do, but we weren't actually doing so
• Create a test page so that you can debug skinny UI components within the package
• Add pointy.js to the /dependencies folder, for use in test pages
• Update version of grunt-contrib-jshint to eliminate error during grunt
• Remove IE7-8 support

[labaneilers]

Looks like the build failed due to the inevitable march forward of the JS ecosystem. js-test is failing, I'll have to take a look.