Fix queue display to update when becoming active.
Improvements to section headers, improving their look, and avoid overlapping with indexes.
Fix track controller scene layout.
Fix status bar in the Queue tab from being black text on black background.
Switch to previous tab when the queue is finished and the queue is the current tab.
The word “Unknown” is just too wide for the section indexes.
Switch browsing cells to use constraints.  This prevents some overlap issues, and seems to work better.