collapsibleTabs: Debounce resize event at 100ms instead of 500ms

A delay of 500ms is quite long and is a bad user experience.
Resize should be more responsive than that.

Matches other plugins that do the same thing, such as:
http://www.paulirish.com/2009/throttled-smartresize-jquery-event-handler/

And also more in accordance with RAIL.
https://developers.google.com/web/tools/chrome-devtools/profile/evaluate-performance/rail

Change-Id: I076785f82a7786f16ca4fb1564a4972dd23cc56b

collapsibleTabs.js

@@ -26,7 +26,7 @@
 
 		// if we haven't already bound our resize handler, bind it now
 		if ( !$.collapsibleTabs.boundEvent ) {
-			$( window ).on( 'resize', $.debounce( 500, function () {
+			$( window ).on( 'resize', $.debounce( 100, function () {
 				$.collapsibleTabs.handleResize();
 			} ) );
 			$.collapsibleTabs.boundEvent = true;