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/style-to-object/index.js

@@ -0,0 +1,42 @@
+var parse = require('inline-style-parser');
+
+/**
+ * Parses inline style to object.
+ *
+ * @example
+ * // returns { 'line-height': '42' }
+ * StyleToObject('line-height: 42;');
+ *
+ * @param  {String}      style      - The inline style.
+ * @param  {Function}    [iterator] - The iterator function.
+ * @return {null|Object}
+ */
+function StyleToObject(style, iterator) {
+  var output = null;
+  if (!style || typeof style !== 'string') {
+    return output;
+  }
+
+  var declaration;
+  var declarations = parse(style);
+  var hasIterator = typeof iterator === 'function';
+  var property;
+  var value;
+
+  for (var i = 0, len = declarations.length; i < len; i++) {
+    declaration = declarations[i];
+    property = declaration.property;
+    value = declaration.value;
+
+    if (hasIterator) {
+      iterator(property, value, declaration);
+    } else if (value) {
+      output || (output = {});
+      output[property] = value;
+    }
+  }
+
+  return output;
+}
+
+module.exports = StyleToObject;