message: only show resend options if event hasn't been redacted
  (which can now be only local, which is why this wasn't neccesary before)
diff: @@ -269,7 +269,7 @@ module.exports = React.createClass({
  // status is SENT before remote-echo, null after
  const isSent = !eventStatus || eventStatus === EventStatus.SENT;
  -
  + if (!mxEvent.isRedacted()) {
  if (eventStatus === EventStatus.NOT_SENT) {
  resendButton = (
  <div className="mx_MessageContextMenu_field" onClick={this.onResendClick}>
  @@ -293,6 +293,7 @@ module.exports = React.createClass({
  </div>
  );
  }
  + }
  if (redactStatus === EventStatus.NOT_SENT) {
  resendRedactionButton = (
  