Update to set the z-index of custom select menus to stack on top of f…

…ixed toolbars. Fixes #2799.

css/structure/jquery.mobile.forms.select.css

@@ -20,7 +20,7 @@ label.ui-select { font-size: 16px; line-height: 1.4;  font-weight: normal; margi
 .ui-select .ui-btn-text, .ui-selectmenu .ui-btn-text { display: block; min-height: 1em; overflow: hidden; }
 .ui-select .ui-btn-text { text-overflow: ellipsis; }
 
-.ui-selectmenu { position: absolute; padding: 0; z-index: 100 !important; width: 80%; max-width: 350px; padding: 6px; }
+.ui-selectmenu { position: absolute; padding: 0; z-index: 1100 !important; width: 80%; max-width: 350px; padding: 6px; }
 .ui-selectmenu .ui-listview { margin: 0; }
 .ui-selectmenu .ui-btn.ui-li-divider { cursor: default; }
 .ui-selectmenu-hidden { top: -9999px; left: -9999px; }