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/humanize-ms/History.md

@@ -0,0 +1,25 @@
+
+1.2.1 / 2017-05-19
+==================
+
+  * fix: package.json to reduce vulnerabilities (#3)
+
+1.2.0 / 2016-05-21
+==================
+
+  * feat: warn with stack
+
+1.1.0 / 2016-04-04
+==================
+
+  * deps: upgrade ms to 0.7.0
+
+1.0.1 / 2014-12-31
+==================
+
+  * feat(index.js): warn when result is undefined
+
+1.0.0 / 2014-08-14
+==================
+
+  * init