Hack for setting an 'auto' z-index in the jQuery UI Layout plugin

jqueryUILayout-zIndex-auto-hack

/*
The following hack is useful if you plan to use seamlessly jQuery UI Layout plugin (https://github.com/allpro/layout) 
and Bootstrap components, like Dropdown, Popover, Tooltip;

Otherwise you have to use special utiliy methods, like allowOverflow( elem_or_pane ), resetOverflow( elem_or_pane )
everytime you want to show/hide each and every component that may oveflow the pane. 

*/
 
.ui-layout-pane { /* all 'panes' */
 
/*
don't create a new stacking context, so that overflowing child elements of a 'pane'
(for example: popups, dropdown lists, tooltips) are correctly displayed
in front of other 'panes' WHILE the mouse IS NEITHER over the 'pane' NOR over its child elements.
*/
z-index: auto !important;
 
}