message: Sent -> Event
diff: @@ -177,7 +177,7 @@ var TimelinePanel = React.createClass({
  componentWillMount: function() {
  debuglog("TimelinePanel: mounting");
  - this.lastRRSentSentId = undefined;
  + this.lastRRSentEventId = undefined;
  this.lastRMSentEventId = undefined;
  this.dispatcherRef = dis.register(this.onAction);
  @@ -541,7 +541,7 @@ var TimelinePanel = React.createClass({
  // the current RR event.
  lastReadEventIndex > currentReadUpToEventIndex &&
  // Only send a RR if the last RR set != the one we would send
  - this.lastRRSentSentId != lastReadEvent.getId();
  + this.lastRRSentEventId != lastReadEvent.getId();
  // Only send a RM if the last RM sent != the one we would send
  const shouldSendReadMarker =
  @@ -551,7 +551,7 @@ var TimelinePanel = React.createClass({
  // same one at the server repeatedly
  if (shouldSendReadReceipt || shouldSendReadMarker) {
  if (shouldSendReadReceipt) {
  - this.lastRRSentSentId = lastReadEvent.getId();
  + this.lastRRSentEventId = lastReadEvent.getId();
  } else {
  lastReadEvent = null;
  }
  @@ -572,11 +572,11 @@ var TimelinePanel = React.createClass({
  return MatrixClientPeg.get().sendReadReceipt(
  lastReadEvent,
  ).catch(() => {
  - this.lastRRSentSentId = undefined;
  + this.lastRRSentEventId = undefined;
  });
  }
  // it failed, so allow retries next time the user is active
  - this.lastRRSentSentId = undefined;
  + this.lastRRSentEventId = undefined;
  this.lastRMSentEventId = undefined;
  });
  