Fix group invites such that they look similar to room invites

- Remove CSS for GroupInviteTile - the component should be using RoomTile CSS
 - Added extra tiles to roomCount of RoomSubList header

Part of fixing https://github.com/vector-im/riot-web/issues/5226

src/components/structures/RoomSubList.js

@@ -246,10 +246,14 @@ var RoomSubList = React.createClass({
     roomNotificationCount: function(truncateAt) {
         var self = this;
 
+        if (this.props.isInvite) {
+            return [0, true];
+        }
+
         return this.props.list.reduce(function(result, room, index) {
             if (truncateAt === undefined || index >= truncateAt) {
                 var roomNotifState = RoomNotifs.getRoomNotifsState(room.roomId);
-                var highlight = room.getUnreadNotificationCount('highlight') > 0 || self.props.isInvite;
+                var highlight = room.getUnreadNotificationCount('highlight') > 0;
                 var notificationCount = room.getUnreadNotificationCount();
 
                 const notifBadges = notificationCount > 0 && self._shouldShowNotifBadge(roomNotifState);
@@ -394,7 +398,8 @@ var RoomSubList = React.createClass({
         var subListNotifCount = subListNotifications[0];
         var subListNotifHighlight = subListNotifications[1];
 
-        var roomCount = this.props.list.length > 0 ? this.props.list.length : '';
+        var totalTiles = this.props.list.length + (this.props.extraTiles || []).length;
+        var roomCount = totalTiles > 0 ? totalTiles : '';
 
         var chevronClasses = classNames({
             'mx_RoomSubList_chevron': true,

src/skins/vector/css/matrix-react-sdk/views/groups/_GroupInviteTile.scss

@@ -1,74 +0,0 @@
-/*
-Copyright 2017 New Vector Ltd
-
-Licensed under the Apache License, Version 2.0 (the "License");
-you may not use this file except in compliance with the License.
-You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-Unless required by applicable law or agreed to in writing, software
-distributed under the License is distributed on an "AS IS" BASIS,
-WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-See the License for the specific language governing permissions and
-limitations under the License.
-*/
-
-.mx_GroupInviteTile {
-    position: relative;
-    cursor: pointer;
-    font-size: 13px;
-    display: block;
-    height: 34px;
-}
-
-.mx_GroupInviteTile_nameContainer {
-    display: inline-block;
-    width: 180px;
-    height: 24px;
-}
-
-.mx_GroupInviteTile_avatarContainer {
-    display: inline-block;
-    padding-top: 5px;
-    padding-bottom: 5px;
-    padding-left: 16px;
-    padding-right: 6px;
-    width: 24px;
-    height: 24px;
-    vertical-align: middle;
-}
-
-.mx_GroupInviteTile_name {
-    display: inline-block;
-    position: relative;
-    width: 165px;
-    vertical-align: middle;
-    padding-left: 6px;
-    padding-right: 6px;
-    padding-top: 2px;
-    padding-bottom: 3px;
-    color: $roomtile-name-color;
-    white-space: nowrap;
-    overflow: hidden;
-    text-overflow: ellipsis;
-}
-
-.mx_GroupInviteTile_badge {
-    display: inline-block;
-    min-width: 15px;
-    height: 15px;
-    position: absolute;
-    right: 8px; /*gutter */
-    top: 9px;
-    border-radius: 8px;
-    color: $accent-fg-color;
-    background-color: $group-alert-color;
-    font-weight: 600;
-    font-size: 10px;
-    text-align: center;
-    padding-top: 1px;
-    padding-left: 4px;
-    padding-right: 4px;
-}
-

src/skins/vector/css/themes/_base.scss

@@ -23,7 +23,6 @@ $mention-user-pill-bg-color: #ff0064;
 $other-user-pill-bg-color: rgba(0, 0, 0, 0.1);
 
 // groups
-$group-alert-color: #774f7e;
 $group-my-groups-placeholder-bg: #f7f7f7;
 $group-my-groups-placeholder-fg: #888;