Switch to side-by-side view

--- a/GUI/standard.css
+++ b/GUI/standard.css
@@ -28,10 +28,3 @@
                                       stop:0.7 rgba(243, 132, 26, 255), 
                                       stop:1 rgba(255, 255, 255, 0));
 }
-
-/* Note that having a minimal resource file and setting the button here
-   was the only way I found to style the tab close button which is otherwise
-   an ugly red thing */
-QTabBar::close-button {
-     image: url(:/icons/cross.png)
-}