Merge pull request #1760 from pjackson28/v3.0

Removed code that applied longdesc attribute to Lightbox cboxLoadedContentent div (not permitted on non-image elements)
Merge pull request #1761 from pjackson28/v3.0

Implemented workarounds for #1432 and #1699
Fixed site menu icon in mobile view in IE9.
Improved workaround #1699 so no longer succeptible to race conditions. Now restores the scroll immediately after the event triggered when jQuery Mobile scrolls to the top (silentscroll event).