Implement upgrade request dialog

This is currently merely a placeholder for some real upgrade ui

webadmin/src/views/appstore.js

@@ -314,6 +314,11 @@ angular.module('Application').controller('AppStoreController', ['$scope', '$loca
         $('#appNotFoundModal').modal('show');
     };
 
+    $scope.showRequestUpgrade = function () {
+        $('#appInstallModal').modal('hide');
+        $('#upgradeModal').modal('show');
+    };
+
     $scope.gotoApp = function (app) {
         $location.path('/appstore/' + app.manifest.id, false).search({ version : app.manifest.version });
     };