         
         navigationItem.titleView = titleView
         navigationBar.addExtendedNavigationBarView(searchBarContainerView)
+        isRefreshControlEnabled = true
     }
     
     private var fetchedResultsController: NSFetchedResultsController<WMFContentGroup>!

        return titleView
    }()

    // MARK - Search
    
    lazy var searchBarContainerView: UIView = {

        return ReadingListHintController(dataStore: dataStore, presenter: self)
    }()
    
    var numberOfSectionsInExploreFeed: Int {
        guard let sections = fetchedResultsController.sections else {
            return 0
        }
        return sections.count
    }
    
    override func numberOfSections(in collectionView: UICollectionView) -> Int {
        return numberOfSectionsInExploreFeed
    }
    
    private func resetRefreshControl() {
        guard let refreshControl = collectionView.refreshControl,
            refreshControl.isRefreshing else {
            return
        }
        refreshControl.endRefreshing()
    }
    
    private func startMonitoringReachabilityIfNeeded() {
