Restructure Sass files and folders for proper application Sass development

UI/WebServerResources/scss/components/backdrop/backdrop.js

@@ -0,0 +1,31 @@
+(function() {
+'use strict';
+
+/*
+ * @ngdoc module
+ * @name material.components.backdrop
+ * @description Backdrop
+ */
+
+/**
+ * @ngdoc directive
+ * @name mdBackdrop
+ * @module material.components.backdrop
+ *
+ * @restrict E
+ *
+ * @description
+ * `<md-backdrop>` is a backdrop element used by other coponents, such as dialog and bottom sheet.
+ * Apply class `opaque` to make the backdrop use the theme backdrop color.
+ *
+ */
+
+angular.module('material.components.backdrop', [
+  'material.core'
+])
+  .directive('mdBackdrop', BackdropDirective);
+
+function BackdropDirective($mdTheming) {
+  return $mdTheming;
+}
+})();