Cleans up post-animation.

def _finishAnimation(self):
        """
        Cleans up post-animation.
        """
        self.setCurrentIndex(self._nextIndex)
        self.widget(self._lastIndex).hide()
        self.widget(self._lastIndex).move(self._lastPoint)
        self._active = False
        
        if not self.signalsBlocked():
            self.animationFinished.emit()