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/shell-quote/test/env_fn.js

@@ -0,0 +1,21 @@
+'use strict';
+
+var test = require('tape');
+var parse = require('../').parse;
+
+function getEnv() {
+	return 'xxx';
+}
+
+function getEnvObj() {
+	return { op: '@@' };
+}
+
+test('functional env expansion', function (t) {
+	t.plan(4);
+
+	t.same(parse('a $XYZ c', getEnv), ['a', 'xxx', 'c']);
+	t.same(parse('a $XYZ c', getEnvObj), ['a', { op: '@@' }, 'c']);
+	t.same(parse('a${XYZ}c', getEnvObj), ['a', { op: '@@' }, 'c']);
+	t.same(parse('"a $XYZ c"', getEnvObj), ['a ', { op: '@@' }, ' c']);
+});