Public rooms search: Directory page starts to work (with cells from MatrixKit)

Vector/ViewController/HomeViewController.h

@@ -53,6 +53,12 @@
  */
 - (void)closeSelectedRoom;
 
+/**
+ Open the public rooms directory page.
+ It uses the `publicRoomsDirectoryDataSource` managed by the recents view controller data source
+ */
+- (void)showPublicRoomsDirectory;
+
 /**
  Action registered on `UIControlEventTouchUpInside` event for both buttons.
  */