message: Ensure freshly invited members don't count towards the alone warning
  Fixes
  As explained in the code, members that have just been invited might not be counted in `getInvitedMemberCount()`, so we help the math along.
diff: @@ -786,7 +786,7 @@ module.exports = React.createClass({
  return;
  }
  - this._updateRoomMembers();
  + this._updateRoomMembers(member);
  },
  onMyMembership: function(room, membership, oldMembership) {
  @@ -798,16 +798,25 @@ module.exports = React.createClass({
  // rate limited because a power level change will emit an event for every
  // member in the room.
  - _updateRoomMembers: new rate_limited_func(function() {
  + _updateRoomMembers: new rate_limited_func(function(dueToMember) {
  // a member state changed in this room
  // refresh the conf call notification state
  this._updateConfCallNotification();
  this._updateDMState();
  - this._checkIfAlone(this.state.room);
  +
  + let memberCountInfluence = 0;
  + if (dueToMember && dueToMember.membership === "invite" && this.state.room.getInvitedMemberCount() === 0) {
  + // A member got invited, but the room hasn't detected that change yet. Influence the member
  + // count by 1 to counteract this.
  + memberCountInfluence = 1;
  + }
  + this._checkIfAlone(this.state.room, memberCountInfluence);
  +
  +
  this._updateE2EStatus(this.state.room);
  }, 500),
  - _checkIfAlone: function(room) {
  + _checkIfAlone: function(room, countInfluence) {
  let warnedAboutLonelyRoom = false;
  if (localStorage) {
  warnedAboutLonelyRoom = localStorage.getItem('mx_user_alone_warned_' + this.state.room.roomId);
  @@ -817,7 +826,8 @@ module.exports = React.createClass({
  return;
  }
  - const joinedOrInvitedMemberCount = room.getJoinedMemberCount() + room.getInvitedMemberCount();
  + let joinedOrInvitedMemberCount = room.getJoinedMemberCount() + room.getInvitedMemberCount();
  + if (countInfluence) joinedOrInvitedMemberCount += countInfluence;
  this.setState({isAlone: joinedOrInvitedMemberCount === 1});
  },
  