Increase z-index in CSS 'dropdown-menu' class to 1060. The 'tablesorter >...

Increase z-index in CSS 'dropdown-menu' class to 1060. The 'tablesorter > columnselector' will be hidden with 'qfq-sticky' by values < 1000.

less/qfq-bs.css.less

@@ -828,3 +828,7 @@ thead.qfq-sticky th, thead.qfq-sticky td {
 thead.qfq-sticky td {
   top: 49px;
 }
+
+.dropdown-menu {
+  z-index: 1060;
+}
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