message: also look in alt_aliases to match a pill to a room
diff: @@ -129,7 +129,7 @@ const Pill = createReactClass({
  const localRoom = resourceId[0] === '#' ?
  MatrixClientPeg.get().getRooms().find((r) => {
  return r.getCanonicalAlias() === resourceId ||
  - r.getAliases().includes(resourceId);
  + r.getAltAliases().includes(resourceId);
  }) : MatrixClientPeg.get().getRoom(resourceId);
  room = localRoom;
  if (!localRoom) {
  