override func viewWillAppear(animated: Bool) {
        // some other stuff

        if dataManager.ideas.count > 0 {
            lblAllTimeBest.text = "Our all time best with a rating of (dataManager.ideas[dataManager.allTimeBest].averageRating)% is:"

            btnAllTimeBest.hidden = false
             btnAllTimeBest.setTitle(dataManager.ideas[dataManager.allTimeBest].title, forState: UIControlState.Normal)

        //and some more stuff
    }

    @IBAction func btnAllTimeBestTapped(sender: AnyObject) {
            tabBarController?.selectedIndex = 1
    }