Merge pull request #6986 in SW/shopware from sw-22531/5.5/fix-emotion-loading-ie to 5.5

* commit 'baee34113d2e84012d6946ec8e214538738ba69a':
  SW-22531 - Fix emotion loading on IE 11

Author: soebbing

themes/Frontend/Responsive/Theme.php

@@ -79,6 +79,7 @@ class Theme extends \Shopware\Components\Theme
         // Third party plugins / libraries
         'src/js/vendors/modernizr/modernizr.custom.35977.js',
         'vendors/js/jquery/jquery.min.js',
+        'src/js/jquery.symbol-polyfill.js',
         'vendors/js/picturefill/picturefill.min.js',
         'vendors/js/jquery.transit/jquery.transit.js',
         'vendors/js/jquery.event.move/jquery.event.move.js',

themes/Frontend/Responsive/frontend/_public/src/js/jquery.symbol-polyfill.js

@@ -0,0 +1,26 @@
+// https://github.com/stephband/jquery.event.move/issues/41#issuecomment-288851979
+
+if (!window.Symbol) {
+    (function(window) {
+        var defineProperty = Object.defineProperty;
+        var prefix = '__symbol-' + Math.ceil(Math.random() * 1000000000) + '-';
+        var id = 0;
+
+        function Symbol(description) {
+            if (!(this instanceof Symbol)) { return new Symbol(description); }
+            var symbol = prefix + id++;
+            this._symbol = symbol;
+        }
+
+        defineProperty(Symbol.prototype, 'toString', {
+            enumerable: false,
+            configurable: false,
+            writable: false,
+            value: function toString() {
+                return this._symbol;
+            }
+        });
+
+        window.Symbol = Symbol;
+    }(this));
+}