message: Remove extra full stop
diff: @@ -375,7 +375,7 @@ module.exports = React.createClass({
  { _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.") }.
  + "please export your room keys for safe-keeping.") }
  </div>,
  button: _t("Sign out"),
  extraButtons: [
  