message: Question marks do not internationalise
diff: @@ -292,7 +292,7 @@ module.exports = React.createClass({
  onLogoutClicked: function(ev) {
  const QuestionDialog = sdk.getComponent("dialogs.QuestionDialog");
  Modal.createDialog(QuestionDialog, {
  - title: _t("Sign out") + "?",
  + title: _t("Sign out"),
  description:
  <div>
  { _t("For security, logging out will delete any end-to-end encryption keys from this browser. If you want to be able to decrypt your conversation history from future Riot sessions, please export your room keys for safe-keeping") }.
  