#6 Page tab improvements

[Tim Long]

After adding a 6th page, I get arrow buttons to show additional tabs for the pages. It would be nice to provide a way to adjust the size of the horizontal scroll bar so I could see all the tabs, to shrink the scroll bar autoamtically based on the number of pages, or to show the page tabs on a separate row below the scroll bar.

Additionally, it would be helpful to show the page names on the tabs instead of just the numbers.