message: Don't show rooms with tombstones in the address picker
  Fixes
diff: @@ -389,6 +389,17 @@ module.exports = React.createClass({
  const suggestedList = [];
  results.forEach((result) => {
  if (result.room_id) {
  + const client = MatrixClientPeg.get();
  + const room = client.getRoom(result.room_id);
  + if (room) {
  + const tombstone = room.currentState.getStateEvents('m.room.tombstone', '');
  + if (tombstone && tombstone.getContent() && tombstone.getContent()["replacement_room"]) {
  + const replacementRoom = client.getRoom(tombstone.getContent()["replacement_room"]);
  +
  + // Skip rooms with tombstones where we are also aware of the replacement room.
  + if (replacementRoom) return;
  + }
  + }
  suggestedList.push({
  addressType: 'mx-room-id',
  address: result.room_id,
  