Move Docusaurus 1 files into directory (#966)

* Move Docusaurus 1 into v1 directory

* Update Circle CI commands for new v1 dir

* Remove OC

* Fix tests

v1/lib/server/__mocks__/tiny-lr.js

@@ -0,0 +1,12 @@
+/**
+ * Copyright (c) 2017-present, Facebook, Inc.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+const tinylrServer = {
+  listen: jest.fn(),
+};
+
+module.exports = () => tinylrServer;