Fix #1144 problem with supporting css pointer-event in IE

- IE does not support css pointer-event

Sortable.js

@@ -73,7 +73,7 @@
 		supportDraggable = !!('draggable' in document.createElement('div')),
 		supportCssPointerEvents = (function (el) {
 			// false when IE11
-			if (!!navigator.userAgent.match(/Trident.*rv[ :]?11\./)) {
+			if (!!navigator.userAgent.match(/(?:Trident.*rv[ :]?11\.|msie)/i)) {
 				return false;
 			}
 			el = document.createElement('x');