Prepare UX Rework:

- Define the 4 tabs: Home, Fav, People and Rooms

Riot/ViewController/PeopleViewController.h

@@ -0,0 +1,36 @@
+/*
+ Copyright 2017 Vector Creations 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 "ContactsTableViewController.h"
+#import "RecentsDataSource.h"
+
+/**
+ 'PeopleViewController' instance is used to display/filter the direct rooms and a list of contacts.
+ */
+@interface PeopleViewController : ContactsTableViewController <MXKDataSourceDelegate>
+
+/**
+ Display the direct rooms from the provided data source.
+ 
+ Note: The provided data source will replace the current data source if any. The caller
+ should dispose properly this data source if it is not used anymore.
+ 
+ @param directRoomsDataSource the data source providing the direct rooms list.
+ */
+- (void)displayDirectRooms:(RecentsDataSource*)directRoomsDataSource;
+
+@end
+