Restore md-button in sgSearch directive

UI/WebServerResources/js/Common/ui-desktop.js

@@ -632,6 +632,7 @@
         return function postLink(scope, iElement, iAttr, controller) {
           $compile(mdInputEl)(scope);
           $compile(selectEl)(scope);
+          $compile(tElement.find('md-button'))(scope);
         }
       }
     }])