message: Delay `Notifier` check until we have push rules
  The `Notifier` class expects push rules to be available, so it can explode in
  strange ways if called too early. This changes to wait until the sync is in the
  `PREPARED` state (when push rules should be ready) before using the `Notifier`.
  Fixes
diff: @@ -198,7 +198,7 @@ export default React.createClass({
  syncError: null, // If the current syncing status is ERROR, the error object, otherwise null.
  resizeNotifier: new ResizeNotifier(),
  - showNotifierToolbar: Notifier.shouldShowToolbar(),
  + showNotifierToolbar: false,
  };
  return s;
  },
  @@ -1198,7 +1198,6 @@ export default React.createClass({
  */
  _onLoggedIn: async function() {
  this.setStateForNewView({ view: VIEWS.LOGGED_IN });
  - this.setState({showNotifierToolbar: Notifier.shouldShowToolbar()});
  if (this._is_registered) {
  this._is_registered = false;
  @@ -1342,7 +1341,10 @@ export default React.createClass({
  self.firstSyncPromise.resolve();
  dis.dispatch({action: 'focus_composer'});
  - self.setState({ready: true});
  + self.setState({
  + ready: true,
  + showNotifierToolbar: Notifier.shouldShowToolbar(),
  + });
  });
  cli.on('Call.incoming', function(call) {
  // we dispatch this synchronously to make sure that the event
  