修复select2不兼容editor-md组件问题

resources/assets/vendors/js/forms/select/select2.full.js

@@ -1016,9 +1016,16 @@ S2.define('select2/results',[
       'aria-selected': 'false'
     };
 
-    var matches = window.Element.prototype.matches ||
-      window.Element.prototype.msMatchesSelector ||
-      window.Element.prototype.webkitMatchesSelector;
+      var matches = Element.prototype.matchesSelector ||
+          Element.prototype.mozMatchesSelector ||
+          Element.prototype.msMatchesSelector ||
+          Element.prototype.oMatchesSelector ||
+          Element.prototype.webkitMatchesSelector || function(s) {
+              var matches = (this.document || this.ownerDocument).querySelectorAll(s),
+                  i = matches.length;
+              while (--i >= 0 && matches.item(i) !== this) {}
+              return i > -1;
+          };
 
     if ((data.element != null && matches.call(data.element, ':disabled')) ||
         (data.element == null && data.disabled)) {