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/text-table/test/center.js

@@ -0,0 +1,18 @@
+var test = require('tape');
+var table = require('../');
+
+test('center', function (t) {
+    t.plan(1);
+    var s = table([
+        [ 'beep', '1024', 'xyz' ],
+        [ 'boop', '3388450', 'tuv' ],
+        [ 'foo', '10106', 'qrstuv' ],
+        [ 'bar', '45', 'lmno' ]
+    ], { align: [ 'l', 'c', 'l' ] });
+    t.equal(s, [
+        'beep    1024   xyz',
+        'boop  3388450  tuv',
+        'foo    10106   qrstuv',
+        'bar      45    lmno'
+    ].join('\n'));
+});