message: Only set selected tags state when updating rooms
  instead of every time we get an update from a GroupStore/otherwise.
  This was leading to many setStates and renders at startup when we
  receive many group /members /rooms etc. responses.
  Also, use the rate limited version of refreshRoomList.
diff: @@ -324,12 +324,7 @@ module.exports = React.createClass({
  // Show all rooms
  this._visibleRooms = MatrixClientPeg.get().getRooms();
  }
  -
  - this.setState({
  - selectedTags,
  - }, () => {
  - this.refreshRoomList();
  - });
  + this._delayedRefreshRoomList();
  },
  refreshRoomList: function() {
  @@ -345,6 +340,9 @@ module.exports = React.createClass({
  this.setState({
  lists: this.getRoomLists(),
  totalRoomCount: totalRooms,
  + // Do this here so as to not render every time the selected tags
  + // themselves change.
  + selectedTags: TagOrderStore.getSelectedTags(),
  });
  // this._lastRefreshRoomListTs = Date.now();
  