Public rooms search: Automatically scroll to the top on each new seach

Vector/ViewController/RecentsViewController.h

@@ -20,6 +20,12 @@
 
 @interface RecentsViewController : MXKRecentListViewController
 
+/**
+ If YES, the table view will scroll at the top on the next data source refresh.
+ It comes back to NO after each refresh.
+ */
+@property (nonatomic) BOOL shouldScrollToTopOnRefresh;
+
 /**
  Display the recents described in the provided data source.