Fix table reset on pagination change

We were getting an issue we were getting:
1) filtering to, say, 15 rows
2) moving to the last page
3) changing the pagination to more than 15 (or whatever)
4) no rows displayed

This seemed to fix it.

addons/pager/jquery.tablesorter.pager.js

@@ -542,6 +542,7 @@
 			$.data(table, 'pagerLastPage', p.page);
 			$.data(table, 'pagerLastSize', p.size);
 			p.totalPages = Math.ceil( p.totalRows / p.size );
+			p.filteredPages = Math.ceil( p.filteredRows / p.size );
 			moveToPage(table, p);
 		},