message: Implement password nag warning in user settings account section
  "To return to your account in future you need to set a password" in the account section when a user has not yet set a password (is a PWLU).
diff: @@ -21,6 +21,7 @@ const MatrixClientPeg = require("../../MatrixClientPeg");
  const PlatformPeg = require("../../PlatformPeg");
  const Modal = require('../../Modal');
  const dis = require("../../dispatcher");
  +import sessionStore from '../../stores/SessionStore';
  const q = require('q');
  const packageJson = require('../../../package.json');
  const UserSettingsStore = require('../../UserSettingsStore');
  @@ -243,6 +244,12 @@ module.exports = React.createClass({
  this.setState({
  language: languageHandler.getCurrentLanguage(),
  });
  +
  + this._sessionStore = sessionStore;
  + this._sessionStoreToken = this._sessionStore.addListener(
  + this._setStateFromSessionStore,
  + );
  + this._setStateFromSessionStore();
  },
  componentDidMount: function() {
  @@ -269,6 +276,12 @@ module.exports = React.createClass({
  }
  },
  + _setStateFromSessionStore: function() {
  + this.setState({
  + userHasGeneratedPassword: Boolean(this._sessionStore.getCachedPassword()),
  + });
  + },
  +
  _electronSettings: function(ev, settings) {
  this.setState({ electron_settings: settings });
  },
  @@ -1201,7 +1214,12 @@ module.exports = React.createClass({
  <h3>{ _t("Account") }</h3>
  <div className="mx_UserSettings_section cadcampoHide">
  -
  + { this.state.userHasGeneratedPassword ?
  + <div className="mx_UserSettings_passwordWarning">
  + <img className="mx_UserSettings_passwordWarning_icon" src="img/warning.svg" width="24" height="23" alt="Warning"/>
  + { _t("To return to your account in future you need to set a password") }
  + </div> : null
  + }
  <AccessibleButton className="mx_UserSettings_logout mx_UserSettings_button" onClick={this.onLogoutClicked}>
  { _t("Sign out") }
  </AccessibleButton>
  