Minor component update (modals)

This release is modifying the Modal api (again) to be slightly more logical and consistent with the other components.

Modal buttons now require data-target instead of data-modal-button. The value of the attribute should still match whatever value set on data-modal on your modal's overlay wrapper.

Some other updates were made to the website:

• Dependencies updated
• Proper handling of polyfills to only load on non-modern browsers