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/crypto-js/CONTRIBUTING.md

@@ -0,0 +1,28 @@
+# Contribution
+
+# Git Flow 
+
+The crypto-js project uses [git flow](https://github.com/nvie/gitflow) to manage branches. 
+Do your changes on the `develop` or even better on a `feature/*` branch. Don't do any changes on the `master` branch.
+
+# Pull request
+
+Target your pull request on `develop` branch. Other pull request won't be accepted.
+
+# How to build
+
+1. Clone
+
+2. Run
+
+    ```sh
+    npm install
+    ```
+
+3. Run
+
+    ```sh
+    npm run build
+    ```
+    
+4. Check `build` folder