FRE-600: Fix code review blockers

- Consolidated duplicate UndoManagers to single instance
- Fixed connection promise to only resolve on 'connected' status
- Fixed WebSocketProvider import (WebsocketProvider)
- Added proper doc.destroy() cleanup
- Renamed isPresenceInitialized property to avoid conflict

Co-Authored-By: Paperclip <noreply@paperclip.ing>

node_modules/qrcode/lib/index.js

@@ -0,0 +1,12 @@
+/*
+*copyright Ryan Day 2012
+*
+* Licensed under the MIT license:
+*   http://www.opensource.org/licenses/mit-license.php
+*
+* this is the main server side application file for node-qrcode.
+* these exports use serverside canvas api methods for file IO and buffers
+*
+*/
+
+module.exports = require('./server')