Fix: grid ARIA role should be on the table, not the container

- Feedback from James Craig - author of WAI-ARIA specification.

.datatables-commit-sync

@@ -1 +1 @@
-4d968710b6b942e511f833c96dc45c1533ec1db0
+1d7bb5389cc0da4d1176ca115fda46b584d70e50

media/js/jquery.dataTables.js

@@ -1994,7 +1994,6 @@
 	
 		// All DataTables are wrapped in a div
 		var insert = $('<div/>', {
-			role:    'grid',
 			id:      oSettings.sTableId+'_wrapper',
 			'class': classes.sWrapper + (oSettings.nTFoot ? '' : ' '+classes.sNoFooter)
 		} );
@@ -3374,6 +3373,12 @@
 	 */
 	function _fnFeatureHtmlTable ( settings )
 	{
+		var table = $(settings.nTable);
+	
+		// Add the ARIA grid role to the table
+		table.attr( 'role', 'grid' );
+	
+		// Scrolling from here on in
 		var scroll = settings.oScroll;
 	
 		if ( scroll.sX === '' && scroll.sY === '' ) {
@@ -3383,7 +3388,6 @@
 		var scrollX = scroll.sX;
 		var scrollY = scroll.sY;
 		var classes = settings.oClasses;
-		var table = $(settings.nTable);
 		var caption = table.children('caption');
 		var captionSide = caption.length ? caption[0]._captionSide : null;
 		var headerClone = $( table[0].cloneNode(false) );