message: Fix redacted member events being visible
  This was due to the `MemberEventListSummary` not ignoring redacted joins/leaves. This was also causing bug
diff: @@ -295,8 +295,8 @@ module.exports = React.createClass({
  var last = (i == lastShownEventIndex);
  - // Wrap consecutive member events in a ListSummary
  - if (isMembershipChange(mxEv)) {
  + // Wrap consecutive member events in a ListSummary, ignore if redacted
  + if (isMembershipChange(mxEv) && EventTile.haveTileForEvent(mxEv)) {
  let ts1 = mxEv.getTs();
  // Ensure that the key of the MemberEventListSummary does not change with new
  // member events. This will prevent it from being re-created unnecessarily, and
  @@ -317,6 +317,11 @@ module.exports = React.createClass({
  for (;i + 1 < this.props.events.length; i++) {
  let collapsedMxEv = this.props.events[i + 1];
  + // Ignore redacted member events
  + if (!EventTile.haveTileForEvent(collapsedMxEv)) {
  + continue;
  + }
  +
  if (!isMembershipChange(collapsedMxEv) ||
  this._wantsDateSeparator(this.props.events[i], collapsedMxEv.getDate())) {
  break;
  