Bug Fix - Use contains_url filter for navigating files and showing a file index for a room

#652

Support file search at room level.

Vector/ViewController/RoomFilesSearchViewController.h

@@ -0,0 +1,26 @@
+/*
+ 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>
+
+@interface RoomFilesSearchViewController : MXKSearchViewController
+
+/**
+ The event selected in the search results
+ */
+@property (nonatomic, readonly) MXEvent *selectedEvent;
+
+@end