Merge pull request #1937 from pjackson28/v3.0

Merged video and audio multimedia player examples and cleaned up validation errors
Fixed broken links.
Merge pull request #1939 from EricDunsworth/v3.0-broken-link-fixes

Fixed broken links.
Upgraded to jQuery Mobile 1.2.1.
Removed text-shadow applied to calendar elements by jQuery Mobile.
Fixed display of checkboxes in mobile view for feedback form.
Grouped form validation checkboxes with ui-controlgroup. Limited form margin-* mobile view override to just margin-left and margin-right (to ensure proper spacing in forms).