Room Details: Add 'Files' tab

Display now the index of room files

Vector/ViewController/RoomFilesViewController.h

@@ -0,0 +1,24 @@
+/*
+Copyright 2016 OpenMarket 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.
+*/
+
+#import <MatrixKit/MatrixKit.h>
+
+/**
+ This view controller displays the attachments of a room. Only one matrix session is handled by this view controller.
+ */
+@interface RoomFilesViewController : MXKRoomViewController
+
+@end