Is there a way to hide the top tab bar while I am using the Tree Style Tab option? I love the new option for using the Tree Style Tabs to my left, but it seems redundant to have the tabs on my left while also having them across the top. It clutters my window with too much text and I would love to see a cleaner window with just my bookmarks across the top and the tabs to my left. I can't seem to find a setting for that. Does one exist?